I’m not trying to hate on Gabe Newell or Valve or anything (and not to say that it isn’t a pretty objectively win-win) but I think there’s some pretty easily explainable motivation behind this that isn’t just “out of the kindness of their hearts”

I think the product they intend to sell is actually the software and services (there’s a reason the Deck seems to be sold basically at cost), they’re betting on these PC-based portable gaming devices taking off and being a viable segment of the market that other hardware companies will want to invest into, and if they do, what highly functional and easy to integrate (since it’s all open source) operating system (and its subsequent game store integration) might they be more likely to use?

And why push upstream? They’re by far the largest PC games provider, so more games running on more (Linux) devices can only really serve to financially benefit them