CatLady
Selfishly plays on Xbox Purr-ies X
I don't know if you can compare a third party going first party to a first party going multi platform. In the former the games already have established fan bases looking forward to the next games. I don't expect Halo or Gears to go to Playstation as they have always been MS exclusive.
I also wasnt happy when Microsoft did it with Rise of the Tomb Raider and Sony with Street Fighter 5. I guess its just bought exclusivity that was previously multiplatform that I dislike, what ever side of the fence that falls on. I do think Bayonetta 2 and Deadly Premonition 2 are rare examples though where had it not been for the exclusivity the game would not have been made in the first place.
Money wise who knows what Microsoft has planned. Exclusivity would increase consoles sales and bolster Gamepass but would that make up for the deficit of all those lost unit sales had they kept selling to everyone (I.e Minecraft). Bethesda value would go down with the former but conversely MS value would go up. It's super complicated to balance on a spreadsheet, just like Gamepass is at the moment. I can honestly see it going either way (with Gamepass playing a key role in either strategy).
PC is an option if Sony loses Bethesda support ultimately. I'd gain other first party titles but not sure if I want the extra cost, lack of a 4k drive and loss of Sony first parties. Its.a tough one based on my preferences.
There's always Series X. It has a BRD, additional 1st party titles, the best place to play 3rd parties on the most powerful console at the same price as PS5 and a lot cheaper than a PC. Plus it has Game Pass.