And you are wrong on all interpretations. Starting with the fact the switch is a direct competitor in the console market. As for second console: if you mean purchased later, the switch is as much of a second console compared to ps4/x1 as the ps4/x1 are second consoles compared to wii, ps3 and x360. Being of a different generation means that most purchasers will already own a previous gen console.

If you mean the system people mostly play on if they own more than one, the numbers on this topic do not say anything about that. And if you're talking about purchase preference, many prefer a switch and maybe one of ps4 or x1, with precious few owning both a ps4 and x1. As the switch is the common deniminator in that equation, that makes the others secondary. As I said before, this will be observed better during the 10th gen since all 3 will belong to the same gen and the lines won't be blurred.

It says right there that to 30% of owners, it's NOT what they're doing. 

I bet Switch/PC is another stat worth exploring.

It isn't about franchises.  It's about the quality of the games.  You know the N64 and Gamecube had several of my favorite franchises and I still gave them both a pass.  The quality of the "franchises" dropped.  On top of that the % of original good games also dropped.  The N64 and Gamecube were more powerful than their Playstation competitors and they suffered for it.  Power has all sorts of disadvantages including the effects it has on game development.  High game budgets means fewer games and less risk taking, so there are fewer original games as well.

This time around PS4 is the disappointing console.  All of the Playstation "franchises" I used to love are diminished in some way on the PS4, or they simply don't appear at all.  If you want specifics here they are:

Legend of Dragoon and Okage were RPGs I liked made by SIE themselves.  Does SIE even make RPGs anymore?
Demon's Souls and Dark Souls were great games and Sony helped the first one by publishing it in Japan.  Dark Souls 3 is a legitimately great game, but it's also the last Dark Souls game.  Sony doesn't seem to want to fund good Japanese-made games anymore.
Bloodborne sucks.
The Last Guardian is not as good as Shadow of the Colossus, and I don't care that they remastered SoC for PS4.

Uncharted 4 is the best Uncharted, but I only thought this franchise was ok to begin with.
Spider-Man is my favorite PS4 exclusive, but it still isn't as good as Spider-Man 2 on the PS2.
The Last of Us was decent, but a highly overrated game.
God of War is a highly overrated series.

Nier: Automata seemed decent from what I've played, but I haven't picked it up after the first few hours because there are plenty of Switch games I'd rather be playing.
DQ11 I have on the Switch, because it is the definitive edition and also portable.
Undertale is a really good game.  I played it on the PC first, but it's still a really good game.  Deltarune I played on the Switch though.
Valkyria Chronicles 4 I got on the Switch, because it's portable.  Same with Dragon Quest Builders.
Hyrule Warriors is the definitive Warriors game now.  I definitely can't go back to standard Dynasty Warriors anymore.

Katamari Damacy was only good on the PS2, but doesn't even appear on the PS4.
Final Fantasy Tactics is one of my top 5 games of all time.  The sequels got moved to Nintendo handhelds, and then they stopped making them.
Final Fantasy used to be my favorite franchise and my main reason for buying a Playstation console.  Now I don't even care about Final Fantasy, and I know I am not the only fan to say this.  FF15, I played for an hour or so.  The mechanics didn't grab me and the characters didn't either.  

Final Fantasy 7 is my favorite game in my (formerly) favorite series, but they are giving it the Hobbit treatment.  With the Hobbit movies, Hollywood was like, "Hey do you like Lord of the Rings?"  I'm like "Yeah, I love Lord of the Rings."  "Do you like the Hobbit?"  "Yeah I loved that old cartoon movie, and the book was good too."  "Well we are going to give you THREE Hobbit movies!"  "Dammit!"

Three FF7 games is not better.  It's worse.  It's so much worse.  I'm still not sure what I am going to do with this game.  I want to like it, but it seems like it's going to piss me off.  Although the game seems like the perfect conclusion to the whole PS4 experience.  They seem like they are giving me what they want, but they are really just pissing me off.  

The PS4, in general, seems great on the surface.  But a closer inspection reveals that it is hugely disappointing.  For me, at least, it is hugely disappointing.  All of my favorite "franchises" are diminished in some way, and it also lacks new games which are interesting.  I don't know what games the PS5 will have, but if they continue in this direction then it is unlikely I will get one.  At best I will buy one several years from now, when it is cheap, and use it mostly for streaming and Blu-Rays, which is mostly what I do with my PS4 system.

Most of this is not related to sony or anything about how the PS4 was handled. The only topic of relevance is sonys investment in Japanese titles (Gravity Rush2/Blodborne/TheLastGuardian), so its just purely about what software arrives on each platform.

But with some of those comments I'm very surprised you enjoyed the PS3, but you don't need to elaborate on that. 

Keeping in mind that this is all supposed to be fun, hobbyist speculation. This assumptions seems very far off imo

You're implying that for those with cross console ownership, the Switch is a longterm replacement for their PS4/Xbox One and they will skip PS5/XSX? Now of course this will be the case for some people, but for the majority? I struggle to see it. Even just if we break it down by game type.

_Someone who bought a PS4 for Final FantasyXV, Kingdom Hearts3, Persona5 ignoring FFVII remakes for the year because animal crossing is on the way?

_Someone who bought a PS4 for single player action adventure games like Uncharted, Assassins Creed, Horizon, God of War, Star Wars etc finding solace in the one mainline Zelda game released every 4 years? Possible but for most I think not. 

_Someone who's into Souls games, Bloodborne, Nioh, Sekiro or action games like DMC ignoring the much higher count of titles in the PS4's library.

_Someone who has a healthy enjoyment of FPS like COD, Battlefield, Titanfall, ApexLegends, Destiny, Metro etc finding their fix with what on the Switch?

I could go on for a long time. The point is to question why would someone buy a PS4 to begin with, from that how exactly does the Switch replace those gaming needs? 

There's obviously nothing to prove but i enjoy analysing these topics and it seems so obvious that the Switch is not replacing PS4, for the most part it has a very distinct library of successful games and this is what lends it such high cross ownership (almost half of Switch owners own a PS4). This becomes more clear when we look at what sells well on the switch. From third parties the best physical selling Switch title is Minecraft at less than 2m. That is not a big number. Switch software sales are so heavily driven towards a handful of franchises from Nintendo (Mario- 8 titles, Pokemon, Zelda, Splatoon and smash). Games that do amazingly well on Switch are not available on PS4 and vise versa, they rarely cross over in genre and its hard to imagine one replaces another if someone has interest in both. 

This is nothing to do with putting Nintendo down. 

Steal notable sales of the same game. The only place the Switch seems to compete is indie games.

I'll do like Socrates and return with a question, are Ferrari and GM direct competitors because both sell cars?

They would need to cater to the same market, It is very hard to defend Switch (or Wii or WiiU) directly competed with  PS360 or PS4X1 when the higher up of the 3 companies say there was direct competition between PS and Xbox and that Nintendo were blue ocean strategy (just look at the folks that bought Wii and never returned to gaming, or now that only 30% of Switch owners don't own a different console).

One day people will accept that there are indirect competitors and replacement products and that isn't something bad about the product in that role when compared with the others. Just as PS X1 would be complimentary to people that like Nintendo first but want to play some third parties Switch is complimentary to who likes to play exclusives of PS or Xbox and 3rd parties but also want to play Nintendo games.

-Next on the list was Yooka-Laylee and the Impossible Lair, from Team17 and Playtonicm, which comes in at No.31. 56% of sales came on Nintendo Switch, with 30% on PS4 and the rest coming on Xbox One."

It says right there that to 30% of owners, it's NOT what they're doing. 

Source?

Cos if so, that's really telling, and shows they were right to make the Switch the lead platform. 

Sony's strategy is to rely on third party games more than first party games.  Therefore, if they don't have many compelling third party games than that is mostly their fault.  The fact that their first party games are not particularly compelling is definitely their fault.  The Switch has more interesting third party games, to me at least, than PS4 does.  Some of these, like Octopath Traveler or Mario + Rabbids, are there because of Nintendo's involvement.

I stand by my original statement.  Based on my past track record I have been more loyal to Sony than Nintendo, but if PS5 follows the same direction as PS4 then I don't expect to like PS5 very much.  I might skip it or get it cheap for streaming and Blu-Rays.