Those two combined means people will sometimes have to be dropped off at a floor they don’t want to go to. Are there elevators that do that? I’ve never seen one.

I guess that may be because it would require the elevator to inform the passengers “we’re at floor ten now. Everybody for floors ten and up, get out”, _and_ the passengers would have to hear that _and_ they would have to listen. It also may mean some floors sometimes get too busy with waiting passengers.