I suspect that sitcoms, YouTube stuff, home videos, etc. work better as 60 fps because the content in them is real. There aren't props, fantastical settings, or other elements requiring suspension of disbelief.

I wonder if likewise, 48 fps would work well for drama/comedy movies, where the sets and settings are realistic, vs. action/fantasy films it tends to be advertised on. I haven't knowingly seen such a movie.