Yeah but the issue is with PC's and higher res settings is the bigger impact it has on the system. Hell at that large, I'd just buy a projector and a really nice projector screen.
Dev as for consoles having a set system I don't see that as an Issue. Imagine for say PC gamers there were set systems ranging from Web Browser to Crysis at 120fps! labeled systems.
It would be great cause developer's only have 1 (or in consoles cases 1 to 5 systems) to get the max out of a system. But then again you have developers like Bungie, and Bioware, and Rockstar that are pushing textures/poly's over framerate.