Gotcha, makes sense.
They might, but it is hard to say that right now. I would hope that if they were to get their own platform on PC, they would try to get people to buy from them using benefits such as "cross-buy" (something they have done in the past), trophies, save syncing, etc. instead of just removing their games from the PC stores they already are on. They should put their games on all PC platforms, at least I hope so anyway.
I don't think they will be able to expand on PC as quickly if they make their games exclusive only to their platform. But exclusivity for other third-party games, well, I hope they don't go that route. I know EPIC does that, but I don't think Sony should follow that on the PC. It should only be their games; probably not likely.
Hmm, yeah. I suppose they will probably want to do that on their own channels from a business perspective. I see your point.