I think there are significant differences between Sony, Microsoft, and Nintendo's strategies and positions here that should be considered. 

For Microsoft, Game Pass on PC is a genuine replacement for Xbox for most people. Almost all of their first party titles release day one on both PC and Xbox. The effect is that people would rather get PC (tailored toward their needs) than an Xbox. While this does hurt Xbox sales, it doesn't hurt Microsoft's profits because software tends to be more profitable than hardware. The risk for Microsoft is that they have to directly compete with Steam, GOG, Epic Game Store, etc and not just Sony.

For Sony, the status quo has been releasing the games on PS5 and then releasing ports of them like 1-3 years later to PC. Obviously this creates a platform-stratification that Microsoft doesn't have. Especially, since Sony is releasing them on PC targeting other company's platform's and not their own. We've seen that PS5 sales have not been hurt by this, in software or hardware. 

Nintendo is the company that has done the least on other hardware, but that fits their business model because 1. Nintendo designs hardware specifically to support their software and their software needs that requisite hardware, and 2. Nintendo has the strongest first party brand of the three. Sony would have to really ramp up the brand of their IP's to pull off what Nintendo does. The closest thing they have are their licensed multi-media IP's (i.e Marvel, which is really Disney's at the end of the day), but those alone aren't going to be sufficient. 

I think Sony could keep its status quo of timed-exclusives, and still not risk their brand. The benefit of introducing their non multi-media IPs to others, and gaining duplicate sales probably outweighs the risks. 

But of course, Sony has internal business analysts and executives who probably discover otherwise here. Only time will tell. 

This is a smart decision on Sony's part, mostly because I thought it was dumb of them to put their games on the PC.  They are, in fact, competing with the PC.  And in regions where Playstation has a major presence I believe they are more popular than Steam (like US, UK, France, etc...).  There are some "master race" PC gamers that Playstation will never get, but in a lot of regions people use the PC over Playstation for one of the following reasons:

1) Playstation hardware is not in plentiful numbers   OR

2) People lack money for a console and only get a few PC titles that run on a potato, are cheap, and have lots of content like Minecraft, GTA5, Skyrim, etc....

Sony could get more gamers in category 1, but having a bigger presence in more countries which is a better strategy than 1st party games on the PC.  I really think there is potential in places like Brazil and India to get more people to have a Playstation.  That leads to category 2, which can be solved by keeping the PS4 going in places where a PS5 is difficult to afford.  

I really think there are a lot of gamers out there that would buy a Playstation (or a Switch for that matter), if availability and price were less of an issue.  Solving these issues are a smarter strategy than putting first party games on Steam.

From a gamer's  viewpoint exclusivity is just bad and every penny not spend on a Sony will then end up being spend on maybe a competing game on steam that can grow more and then we probably see a bigger group of emulation like example the bloodborne PC game;

From stockholders it may also become a issue if the margin is lower example=> Spiderman + Pc did made more than the next game that stays PS exclusive.

Things may change in the future again who knows.

Smart move! The core of their business is currently PlayStation and it is better to strengthen their own platform.

It won't surprise me. It isn't pure luck that Microsoft had reduced tens of millions of consoles sold.
A big part of that is the exclusivity of the games. They must also grow bigger their Gaming department.
Naughty Dog probably will release one game this gen and in PS3 gen it had released 3 Uncharted + 1 Last of US. 75% reduction of output.

PS5 did $1B in the last quarter alone if I remember it right.

I think its quite a bit more than 1% but its nowhere near what their actual platform can generate for them, yeah.

Yeah, their sole direct competitor imploding might have something to do with that.

MS went from being toe to toe with them to buying Activision (which cost almost as much as Sony and Nintendo's gaming profits combined since 2000!) and still end up making less than PlayStation per quarter. It doesn't seem like their multiplatform strategy is working out very well, does it?

So, from that perspective, it hardly looks like Sony are the ones throwing money out of the window.

That is what i think.
I think they were between the choice to keep supporting PC or stop support, and when they saw that Spencer is replaced by AI woman they just decided to cut the support because XBOX is not competitor anymore.
This rly seam like decision made in maybe last 2-3 weeks
In the end that will suck for everyone. Sony now dont have competition anymore so better be prepared for some drastic changes, maybe even during this gen but next gen for sure.
Nothing good can come out when one company have monopoly over market.

I just want Sony to continue to release their A and AA games, these are their best games and they are not system sellers so no harm will come from releasing games like Saros on PC

Damn, Sony with lost of bad news and moves.
Hopefully they will fire hermen hulst and bring Shuhei Yoshida back.

It needs to be studied how Sony botched their PC strategy.
-No day n date
-half bad ports
-late ports
-next to no advertisement
-full price or near full price
-forced PSN login
-terrible regional pricing (this also goes for their PS Store where Xbox, Nintendo, and Valve all have regional pricing)

Is it really no wonder why they've had not so good sales overall? All they had to do was look at other companies and see what to do and what not to do. Microsoft is way more successful on PC than Sony was and there's reasons for that. I see PS fans celebrating and I'm thinking why are ya'll celebrating that Sony failed to get in the PC market? Anyway it's not like PC ports are stopping. Multiplayer games are still day one and their partnered games will still go to PC day one. The article talks about multiplatform for these games, so I guess there's a chance Sony will publish these games on Xbox and Switch system as well.