Sharing is appealing. And thanks to VC money, it's cheap. But as soon as it goes from a small local thing with passionate users to a big business with a big cross section of the overall population, dynamics change.
In Singapore the sharing companies are the present beneficiaries of a government "wait and see" period. The more popular they become, the more incidents occur that will do them no favours. Bikes dumped in rivers. Bikes parked in car traffic lanes on busy roads. Bikes parked in residential racks. Bikes hidden from view to prevent sharing.
This is ugly. This is what it looks like when your shared goods are widely adopted with no expensive enforcement. This is happening in Singapore, one of the most rule-abiding, nice cities in the world.
You want a million customers? The woodwork is buzzing.