I've had a Citi Bike membership for the last couple of years, but recently cancelled renewal and decided to purchase a personal ebike for a few reasons:

1. Too many busted bikes! Seems more often than not when I get on a citi bike something is wrong with it. Either the brakes work poorly, it has some weird clicking sound coming from the bottom bracket, the seat won't stay in place, or the front rack is rattling around. These kind of issues seem to be the norm.
2. E-bike availability sucks, and they are too expensive, even for members.
3. Finding an open dock at your destination can be waaay too much of a hassle because everyone seems to take pretty similar trips. For example, everyone rides to Red Hook on the weekends and just leaves the bike there (I assume in part because Red Hook is at a lower elevation), so you can't really count on being able to find a dock within walking distance of the water.

Perhaps if they were increasing the price in order to improve some of these problems, but it seems they are just doing it to keep up with increased costs.