I'd be curious to know where you live that you have four competing bike-sharing services. That, at least, is surprising to me. Here in NYC the Citibike program has been massively successful, with bike ridership doubling almost overnight (I recommend Sadik-Khan's book STREETFIGHT where she talks about being the commissioner of the DOT and overseeing the deployment). But it was successful because it had buy-in from the local government and because NYC is such a high-density city. Statistically most trips here are under 3 miles, so bikes are a really good fit once you build out a bike network with paint and handshakes.
It's definitely true that ride-sharing apps give bikes a run for their money, but it's worth pointing out that those apps are heavily subsidized by the investors on those companies' boards. $9 rides from one end of Brooklyn to the other will not last (see, for example, surge pricing -- when prices get REAL). I think, when we think about how to scale cities up going in the future, that cars cannot be how we hedge our bets. Their impact on the environment and people's healths and the rates of manslaughter should relegate them to a secondary mode of transportation. They're great for groups and for late-night insobriety, like you point out, but they should hopefully become a utility player in the landscape of things when we picture cities in, like, the year 2050 or the year 3000.
So in many ways bikes are an investment into the future. They've paid off in many places already, and hopefully as American cities move away from the sprawl (thank you, auto lobbies, for all you've given us) to something more modern they'll only become more relevant. It's also worth pointing out, I think, that bike-sharing networks can easily sustain other types of traffic. I see hip-looking people using electric skateboards in the bike lanes all the time, and I'm sure we'll eventually find a way to co-exist with the hoverboarders and the scooters once the panic over those modes of transportation die down. I believe the market behind bike-sharing is only going to grow and there's gold there, but what do I know.
EDIT: It looks like a lot of people jumped on you since I started writing this long comment, so I feel bad for piling on. Just wanted to chime in with one success story.