Apples to oranges. Valve is concerned about hardware lock-in, not software lock-in.
I think users care more about being able to play their games on any hardware platform they own than about which software platform hosts their games. Also, it seems like Steam Deck is just running a customized Linux distro, so it isn't really a lock-in.
If Epic Games or Ubisoft decides to make their game stores work on Linux, I bet they would run on Steam Deck too. If that's the case, then how is it Valve's fault that other vendors/game stores aren't bothering to make their software platforms/games work on Linux? Valve put in the work, and they want to reap the fruits of it, without even trying to lock-in their device from using any other competitors' software (as far as I am aware). Competitors just gotta put in the work to make their platforms work on Linux.
> If Epic Games or Ubisoft decides to make their game stores work on Linux, I bet they would run on Steam Deck too.
They can, because the FAQ says it's just a PC running Arch linux and you can install Windows on it if you want, which means you can do whatever you want. Maybe it can run on the same OS (probably, if it's just Linux, but we'll see how customized it is), or at a minimum you could just install something else.
I think users care more about being able to play their games on any hardware platform they own than about which software platform hosts their games. Also, it seems like Steam Deck is just running a customized Linux distro, so it isn't really a lock-in.
If Epic Games or Ubisoft decides to make their game stores work on Linux, I bet they would run on Steam Deck too. If that's the case, then how is it Valve's fault that other vendors/game stores aren't bothering to make their software platforms/games work on Linux? Valve put in the work, and they want to reap the fruits of it, without even trying to lock-in their device from using any other competitors' software (as far as I am aware). Competitors just gotta put in the work to make their platforms work on Linux.