I'm not sure how each service deals with indemnification against such claims, but the legal requirement, if it exists, to wear helmets, certainly makes a difference to uptake.
For health reasons, helmets are not considered as hireable with bikes in the Australian schemes. This makes it extremely difficult for either tourists or casual interests to just get up and go.
Definitely seems the problem is more accessibility than legality. If a helmet was included, it'd be beneficial to all parties - Reducing risk for the company and the customer. That's really the point I'm trying to make.
For health reasons, helmets are not considered as hireable with bikes in the Australian schemes. This makes it extremely difficult for either tourists or casual interests to just get up and go.