Doest really!? We know for Dark Souls and now maybe for Spyro. Delays dont need explanation, games are delaying all the time and in over 90% cases game couldn't be done on time or needed extra polishing, not to mention that in case of Dark Souls Remastered ports for PS4/XB1 and Switch are done but totally different teams not same one.

Probably it have to do with small budget and teams that they prioritize where they think they will sell more and finish faster than double dip. Considering for evidence the temp exclusives of X360 and Tomb Raider for X1 we have seem that it is much more likely that you'll lose sales by delaying 1 year than earn for double dips. Sure we have cases like TLOU that had earned sony a lot of sales with TLOUR and perhaps portability is enough reason for major double dips (at least in our bubbles seems like there have been a lot of double dips for portability).

Would like to see some numbers to evaluate how much double dip Switch gets compared to possible lost sales from delayed launch. Perhaps we are wrong and it makes a lot of economical sense for publishers to do it.

How? Tomb raider was a PC, SATURN, and PS1 title on launch. It was never a playstation exclusive title that sony had any rights over. So why were you so shocked?

Sony bought temporary exclusive rights just as all major console providers have been doing for ages. That ended in 2000 though LOL. It has always been a PC first title though.

We heard often that it's actually rather easy to develop for Switch, and we have the delay of one specific game. Pick your side.

PC isn't branded so naturally if playstation is the predominant console a game is on, people with associate it with playstation. The lack of competition in the late 90s made many people think sony owned a lot of properties like Tekken, Final Fantasy, GTA etc