The problem I've always had: what I want from a bikeshare is to be able to exit the train station, grab a bike, bike the remaining kilometer or two to work and drop the bike. Later in the day I want to do the same in reverse.
That only works in a hub program if there's a dock next to my office building. (You can count on a dock being next to the train station.) Or I could pay for all-day rental of the bike, when I'm only using it for two ten-minute periods.
In a dockless system, does it actually get any better for my use case?