alt Hacker NewsBut is the disadvantage worth the relatively high overhead of specifically adding arm support? I doubt that. It is better game devs focus on what they're better at - x86 - while valve and open source devs focus on what they're better at, than trying to split funds across competing solutions to the problem.
The solutions have distant tradeoffs. When you want to run the latest PC games on mobile hardware using a battery, every cycle matters. Using translation layers for x86 will never be as good as as a native port.