They’ll most likely expand the model everywhere, while still blaming “regulation”. Then push the narrative that it’s better for the drivers. They need to turn a profit any way possible, and this is a good way to skim a couple dollars per ride. Local competitors in a lot of international markets never adopted flat pricing - in fact Uber itself isn’t flat-price in some markets (eg in my region of Brazil, and it’s not because there’s any regulation there). Uber is the new Taxi cartel. So it goes.