I mean, to be fair, we're quite there well before Game Pass arrived. Industry and game consolidation, 'best practices', and game homogeniety are not the result of game pass entering the market. I think one could make a favourably strong statement that Game pass should technically undo that as the current risk reward system on video games is fairly terrible except for the handful at the top. As companies are paid with sustained long term income or a variety of deals instead of upfront. There are a great deal of many ways for a company to generate buzz for their next title by using game pass. The concept is pretty clear, there are too many games to purchase and play, letting more people try more games lets gamers find their games, and developers find their audiences.
Risk. It just comes down to Risk. Until there is a proven technology that would supplant consoles or there is a proven market to stream games on mobile, why does Sony need to be one to pave the way? They just need to hold firm and wait for it to arrive before releasing their own service. I'm sure they're watching this space keenly; I just don't think they're willing to go head first in yet without more information.
Acquisitions of companies won't fall under game pass which is a service. At the very least I would expect that much. Acquisitions like ABK can still be sold off, it's IPs sold off etc. Just because they paid 70B doesn't mean, that they aren't also holding onto 70B in asset value. The 70B to purchase ABK does not need to be subsidized by game pass.