I wonder why bike sharing is still a thing in business world. Hasn't this business venture been proved to be a fiasco in China, where user base is larger in magnitude, operation cost is residual and virtually no regulation friction, compared to the u.s.? Why do lyft, uber and others think it is viable(profitable) in the u.s.?<p>Another thing beyond me is although the business model/development of this kind seems to be bound to fail, why they are still chased by enormous amount of capital.<p>My cynical suspicion is these so call tech start ups are just instrument of a grand new ponzi scheme in which a bunch of investors use borrowed money(from banks, insurance company and the likes) to set up a start up and increase the value of it(manufacture hype to justify the inflation along the way) and the sell to public, which is mainly pension funds, 401k, government backed institutions and so one, that is, ordinary folks.<p>I hope someone would correct me and shed some light on this matter.