It is indeed possible to have a city full of low-rise buildings that is still compact enough for excellent transit service—but only if most side streets are used for mid-rise buildings instead of houses.
Private bikeshare companies have rolled out large fleets of bikes in cities around the world and United States, but despite their ubiquity, dockless bikeshare is actually much less popular than traditional bikeshare.
As bikeshare operations have evolved and spread they've begun to differentiate, not just between docked and dockless, but also in terms of public or private ownership and electric and non-electric offerings.
Public bikeshare arrived in San Diego in 2014. Last month, three companies unleashed thousands of dockless bikes, cluttering sidewalks in three business districts to the chagrin of merchants who want a time-out so the city can develop regulations.