> Many or most of those 95% ...would be well served by either trying out or having a tech-savvy neighbor help them try out...

I ignored this bit because it wouldn't make an impact. Curiosity and patience is limited for most people so they don't bother exploring options - they just want to game. Having a friend/family/neighbor who can help would be great if there were enough of us, but they still need to take the first step and ask.

Valve is apparently working with Nvidia for proper support with SteamOS. I have my doubts though, I expect AMD will continue to be the best choice, but official support in SteamOS would be significant.