The best thing that happened with Xbox was when Microsoft decided to release Xbox games at the same time on PC because it meant I got a better looking, better running, cheaper version of the game.
The worst thing that happened with Xbox was when Microsoft decided to release Xbox games at the same time on PC because it meant that there was now more reasons to not even own an Xbox console at all. My Xbox Series X has not been used in over a year since I upgraded my PC with an RTX 4080 graphics card.
I own a PS5 Pro and bought the PS5 at launch (but not the Xbox Series X) based on the amount of enjoyment I got from my PS4/PS4 Pro which had fantastic first-party single player exclusives that appealed to me a solo-only gamers who has zero interest in any type of online multiplayer or live service titles.
While the early days of the PS5 were a bit lacking with the cross-gen period and limited number of exclusives, I still felt that the console at least delivered a worthwhile next-gen experience with gems like Astro's Playroom, Ratchet & Crank: Rift Apart, Returnal, etc. and that awesome DualSense controller, certainly in comparison to the massively disappointing Xbox Series X which launched with basically no exclusives for the first two years of its existence. It was why I didn't buy an Xbox Series until over a year after its release and then I only bought one because my old PC couldn't run new games and it was during COVID when it was hard to buy a new GPU nevermind at actual MSRP (which ironically is still happening now!).
When Sony started releasing games on PC, I was happy because being released later meant that I still had a reason to own a PS5 plus games like Astro Bot and Gran Turismo 7 have yet to appear on PC. I think that releasing PS5 games on PC 12 to 18 months later is the best strategy personally. I think that if Sony started releasing games on PS5 and PC that it would not only damage sales of the console but could also lead to a drop in quality in the games themselves as developers have to support two formats (plus PC is a platform that requires significantly more effort due to the near infinite number of hardware combinations).