It seems to me there's two things going on here. Frame rate and bit rate. I think it's possible to have a higher frame rate without having to increase the bit rate, but to do so would impact the quality of the image itself in terms of detail and increase digital artifacts. In most cases, frame rates of 24fps is standard for most movies and of course movie trailers and 30fps is standard for most if not all video productions for NTSC or HDTV. There is however video shot at 24fps for more of a cinematic look.
Now about 60fps. My HDTV and computer monitor both support that frame rate. And, the only source I know that can create 60fps is consumer video equipment. I'm sure there's pro equipment that can record at 60fps, though I believe that frame rate is more appropriate for amateur home video more than anything else.
I think it would be nice if YouTube supported the higher frame rate for video crated at 60fps. However, I believe if they were to do so; it would be at the cost of image quality. Even so, I think in many cases the higher frame rate would look good enough depending on the subject matter.
One example would be pinball. Where everything in the cabinet is still and the only thing moving are flashing lights, flippers and a fast moving ball. In that case, I think it would work out rather well.
Movies must be OAR, sports and movies must also have 5.1 audio, No EE or NO SALE!