Correct, if a business model works and is successful it can lead to a monopoly. And there are laws that try to tackle that. But its going off topic because Ube

Correct, if a business model works and is successful it can lead to a monopoly. And there are laws that try to tackle that. But its going off topic because Uber and Lyft are far away from that position, they hardly have a functioning business model in the first place.