I remember living in NYC pre-Uber. If you were trying to hail a cab in a spot with other people also trying to get one, you had to resort to aggressively yelling "Back the F@#$ off, that's my cab!"

Then Uber came and that largely went away b/c why fight over a cab when you could call and Uber?

Then CitiBike came along. It was amazing that you could just get a bike and ride somewhere. That is, until you were riding it to a commuter bus or train station at evening rush hour. Suddenly, you have 5 mins to catch your train and you see one open slot in the bike return. Another person also sees that spot and you race towards it until you ave to say "Back the F@#$ off, that's my spot!"

In other words, if cities want to have these options then should address directional supply and demand issues otherwise people are just going to say "Not worth the hassle"