Additionally, it's devices like these, that have proven successful in the market, that incentivize Valve to continue Proton's development. It's hard to see given the already insane trajectory Proton's development was on before the Steam Deck, but now that getting games running on Linux (in at least some form) is desirable by many game developers in order to gain Steam Deck support, Proton compatibility guarantees, and the corresponding development to make that happen, have shifted to before the releases of many major AAA games, and that compatibility work has cascading effects for many other games as well.