is that sustainable though?
Honestly, I have no idea.
Lots of people have gotten very used to taking Uber/Lyft places. Once the prices go up, will that behavior change? The original iPhone sold at 500 to 1500 for the XSMax 512 GB. Obviously it isn't an apples to apples comparison, but I think the crux of the strategy depends on how inelastic ridesharing is.
Because these companies have a new war chest of money, if any new upstarts come into the game, they can have a short-term price war to drive these players out. The US seems to be the first market where this strategy will play out.