I'm not convinced it's a temporary bump, though. Space is at a premium in large cities, especially pedestrian/cycling space. As long as bikeshare companies are allowed to use this space for free and wash themselves of responsibility for the negative externalities, I don't see the nuisance and clutter going away anytime.

Don't get me wrong, I'm definitely on Team Ban Cars. But I think that recent unregulated dockless schemes have demonstrated that access to street/sidewalk space is the limiting factor for these companies, and it's sensible to restrict this access somewhat.