PC gaming standards could happen and it would be fine. "PC" is a smorgasbord of standards.
but it would take motivation and leadership which does not exist. only a handful of companies could do it, and they just don't care. why? because they don't make money from you running windows games. that is why the only hope is valve.
or, if PC gaming goes down the tubes more than it has, amd/ati could choke and nvidia could standardize PC gaming in an effort to stop the bleeding. but right now, only valve has the motivation to standardize PC gaming specs.