Share bikes seem like a scam to me, the whole point being some multi year contract for servicing them. I could be wrong, but I'd be curious what kind of money gets thrown at a bike share program for a decent sized city or town.
They do actually get used a fair amount around here because of the student population. Not so much in the winter, as they remove them along with the charging docks in some places. Probably to keep them from getting totally destroyed.