It's true that this can still not go the way Valve wants, but it's like counting on me to do a standing double frontflip because it's not strictly impossible. T

It's true that this can still not go the way Valve wants, but it's like counting on me to do a standing double frontflip because it's not strictly impossible. The only thing in the way of near-100% compatibility is anticheat, and EAC and Battleye both plan on supporting WINE/Proton when Valve releases their hardware. EAC has actually supported WINE for a while now with a little legwork on the part of the developer, so it's not even a question of whether or not it's technically feasible. Once Valve achieves near-perfect compatibility, Microsoft can't change legendarily backward-compatible APIs for the sake of pissing in Valve's cornflakes. This doesn't mean that there will be a large Linux gaming market share now or in the future, but it does mean that Valve has an option if Windows starts to threaten their cut.