Uber has a network effect, so it's naturally monopolistic. Cinema passes have a network effect too (you only want the pass if the cinemas near you have it), but firstly it's much much weaker because you literally only need your local cinema, and secondly that's a network effect that helps the actual cinema, not a random middle man like moviepass.
Uber has a network effect, but it's not exclusive—hence the larger number of drivers driving for both Uber and Lyft. I don't see Uber's position as being very entrenched at this point.
