I think a lot of people are underestimating the appeal of this
This thing is gonna be this decade's Game Boy. It is going to sell like hotcakes, especially if Valve can keep up production. Also, i can see Valve releasing a Home console version of this, to compete with the current gen home consoles, if this catches on. The main thing Valve needs, is for AAA developers to support Linux, and releasing a handheld first can help entincing them. If they had released a TV version first, people would get stuck on not having a 100% perfect experience on the latest AAA titles, and it would lose vs PS5 and Xbox. But as a handheld, it doesn't have any competition other than the Switch, and the Switch has less games, more expensive games, it is far less powerful, it is locked up, can't run emulators, can't be used as a laptop. So Valve will be able to sell a lot of these in the handheld market, and once this catches on and AAA developers realise the market justifies better support for Vulkan/Linux, Valve could potentially release a proper TV version with 10-15 teraflops and conquer the entire console market.