Corner base trap- to the ceiling?

I see lots of corner bass traps installed where they don’t go all the way up to the ceiling. I guess bass sound waves more so accumulate in the lower side of a room, but don’t a lot of these pressure amplitudes reach the upper half? Wouldn’t it be better to have a corner base trap extend all the way up to the ceiling?

Is it possible to have too many bass traps in a room?

Why can't I edit the topic field? Yeah I discovered bass was spelled wrong because I have to dictate everything. I missed seeing the misspelling before I posted and now I can't change the damn field.