It's quite true that they make money on every ride - what I meant is that we get "cheap" rides while they try to win a "winner-takes-all" monopoly, because they can afford to "invest" in expanding, with heavy losses (4.5B in 2017).
It's also true that it's not sure they will ever reach profitability. Therefore, my comment.
It's also true that it's not sure they will ever reach profitability. Therefore, my comment.