Even if I didn't have a Steam Library, I wouldn't buy the PS5 anyway: no Steam Sales there. And Steam Sales are a godsend.
My games have been working on my desktop from 10 years ago, the SteamDeck, my laptop and likely any future computer I buy that runs Linux.
Only the Nintendo store have games priced usually a bit higher.
Why would I re-buy all the games I own?! The vast majority of people one-and-done games and movies. There are a handful they go back to, and that's it.
CHILDREN replay games cycling through them ad-infimum because their entire concept of time is like 3x less than we've been waiting for the next GTA.
And they don't have money! Adults are the majority of the market now.
Any other behavior from adults, who are seriously time constrained, is niche. And that's fine if someone wants to spend their adult time on earth replaying games, but let's be honest. It's niche.
Citation needed.
I would say I am the exception, but hardware survey says otherwise. There are a lot of people for whom the Steam Machine would be at worst a sidegrade.
No? You can plan all your PS4 (and regular PS5) games. Plus some PS3 and PS One (IIRC) other games.
* PS3 games and the like require a 150+$ yearly subscription, and it's streaming for many of them. No thanks.
* No PS2/PSP/Vita compatibility, heck no emulation at all.