This is how regulators wind up securing established companies. Capping commission rates favors Uber because Uber already has the infrastructure and resources at its disposal so that it may afford earning less, cutting head count as necessary, where as entrepreneurs who want to compete with Uber don't. They have many more mountains to climb and less opportunity once they've reached the market.
India is essentially planning on fortifying Uber's position. Well done. Mission accomplished, lobbyists. Go long on Uber stock.