I see 48fps as a curiosity and nothing more. I imagine it will take off much like 3D but will take a long time for it to become the norm.

As for film vs video as a certain someone typically managed to wrangle into this discussion? I've stopped caring. As long as the digital cameras are of high quality I don't care. It's more what's done with the medium and less how it's filmed. Of course I don't excuse George Lucas for filming at only 1080p, but if 2k or 4k cameras are used I think it looks just as good as film to my eye. I like films that have grain structure but honestly it's not a deal-breaker if it wasn't filmed that way the way it is with home video. There's a difference between a film being scrubbed of natural grain and it not having much to begin with.