The reason PC games don't need built-in keybinders is that profilers already work in a nearly universal way. I say "nearly" because there are rare instances where a game will obstruct a profiler. On conflexgames.com, you can download a special version of JoyToKey, which was specifically redesigned, to be easy to look at in a living room. MS Windows and Steam were designed to used at a desk, but not living rooms. Steam does have a Big Picture Mode, but it's not as serious as the kinds of menus you'd see in N64 and PS1 games. This other version of JoyToKey is modelled on console menu designs.