Convenience. Like most who own consoles.
Honest question, then: if there are no console exclusives for Sony or Microsoft, what conveniences do they bring that PC does not bring?
Plug n' Play? You don't have to configure much on PC especially with the way storefronts are now.
Media apps? You get them all and more on PC.
Price? PC usually has consoles beat there, especially with various bundle deals and things like CD Keys.
Cost? With the advances in integrated graphics, lower-end CPUs etc. in two years from now we'll probably have integrated graphics on entry-level CPUs from Intel and AMD that can match or beat what PS5 and Series X provide. And not costing an arm and a leg.
Let alone dedicated GPUs. Stuff like DirectStorage will be in use by then, to. That's only 2024, btw.
Library? More console-centric devs are considering supporting PC a lot more liberally, like Atlus and Capcom. And there are plenty of Steam-only games you'll never get on console (and classic games via GOG never coming to console, either).
So where is the convenience for consoles by that point? I'm not even going to ask if console exclusives don't matter anymore, if the hardware doesn't matter anymore, why don't people pressure Nintendo to adapt to the market and bring their 1P to PC as well? They're a business too and want to make more money, I'm sure.
Just bring everything out on everything and let people buy the box they want. I think it's inevitable within the next ten years. Game pass on PlayStation. Ps plus on xbox. People pay and play the games. Hardwares more or less identical now anyway.
And Nintendo? Why should I be forced to buy a Switch if there's nothing really preventing them from porting their games to PC? I mean, shouldn't they also let me buy the box I want by not "gatekeeping" their software to hardware I'd maybe rather not buy?