I think even absurdly priced rides dont work beyond a certain level of illiquidity. Matching price to order is just too spotty. A perfect example is landing in an airport on a late flight -- i've waited 45min for a taxi at Delta Terminal in NYC. As a business customer, I would have paid $100 or even $200 for a ride that cold night. Most business travelers are cost elastic, esp post-travel. Except there is no way to broadcast that willingness to pay to cab companies, esp at an off-terminal like Delta Terminal. I dont think people realize how truly game-changing Uber and surge pricing was.