This.
This is one of the biggest reasons I feel this idea of Sony worrying about MS is sorta silly. Sony very much sees that MS as a company is looking for their software moving better units on MORE devices vs creating exclusives.
Some either don't want to see it or admit it, or don't factor it in. This is a MAJOR thing, its MS saying they are not in the game of creating exclusives anymore, they are basically a 3rd party developer. So as someone that owns a PS console and gaming PC, MS has given me zero reason to buy a XB, in fact they've given me more and more reason to just keep my PC (or upgrade for next gen), so MS may have sold me on a few titles based on those purchases they made, but they haven't sold me on buying a XB next gen, but maybe that is the point of what MS is doing now. They can't move the same units as Sony on home console, they've tried for 3 generations and clearly this is a thing Sony knows like no other. They can't move to the handheld space as Nintendo has pushed even Sony out of that lol. What MS can do is leverage the PC market, but this means leaving behind this exclusive concept, which clearly will mean less XB sales. This makes sense for MS exact situation, but I see MS going further as its likely those rumors on MS looking to put titles on Switch could very much be true and I think its just the beginning of them moving to other platforms and going 100% 3rd party.
TLDR
This will leave the market even more to Sony, they will make PS5 clearly with titles you can only find on PS5 vs Switch, PC, phones etc. Someone like me has ZERO reasons to buy a XB next gen, I'll just do my same set up next gen PS5 and a gaming PC.