I would say a taxi app is a good though obvious idea, worth pursuing. What was a bit surprising was the sheer scale of it. That crowding out point in the essay

I would say a taxi app is a good though obvious idea, worth pursuing. What was a bit surprising was the sheer scale of it. That crowding out point in the essay is very relevant, we are basically allowing the bully with the big stack to raise everybody out of the poker game, no matter how good his cards actually are. If we want a functioning market, let a bunch of little guys show what they can do, don't let one huge guy scare everyone else away.