For MS, thats good, but again, for some owners of the platform, if you want MS games to be exclusive then the future doesn't look great and as I said, meltdowns prove that (even if overboard, but what about next time they announce more games on rival platforms?). First party exclusives to a platform is still a huge draw when it comes to which console you buy.
As for Sony, the situation is different, they dont really have a sales issue (currently), the issue they have is that for 'some' studios AAA costs are spiraling out of control, they need to reel that in. Weirdly, people keep bringing up Spider Man 2 as an example of this but it has easily made back its budget and then some, but for the long term that isn't sustainable, what if it didn't get 7million sales for example? That's an easy fix though (in theory), smaller, less expensive games like Ratchet and Clank, Astrobot, Returnal etc. prove that those games can be made cheaply enough and sell relatively well, they have a lot of franchises they can lean on to create spin off's/smaller experiences also. But yes, more games will come to PC, but they have been doing that for a while so nothing new there (although we may start to see some being released sooner, although I personally don't think day and date, but 6 months rather than 12 months delay is more likely).