Earlier quoted context omitted.
They’re not in any way committed. Imagine waking up to a taxi and offering $10 to go somewhere, and they tell you no thanks but they’ll do it for $15. These drivers are just negotiating the price. The platform tries to block negotiation but it does not quite succeed.
You think that's why taxis maybe have the regulations they do? You get in a taxi and you know the base rate and the metered rate. And taxis can't adjust the rate either. They don't get to argue and neither do you. The problem I have with this isn't that negotiation is happening, is that it's happening between the wrong parties.
(And it functionally is a bid-ask market, though I'll acknowledge that it's made a bit messier by Uber and Lyft fiddling in internal-and-undocumented ways with the prices and offers that they quote.)