> Unless the company has a lot of fat to trim, it has to come from customers in the form of higher prices, or from investors throwing more cash onto the bonfire.
Nope, there's lots more options than that. Cut executive pay. Tax high earners more and provide social services like healthcare and public transit, to reduce cost and demand on these services. And yes, prices would likely go up, because they're no longer being subsidized by gov't welfare.
> It's very possible that this market only exists at the size that it does at a price that doesn't support what people in the US think of as "a wage they can live off of"
Then the market is exploiting labor and is being subsidized by the welfare system (else the workers couldn't live, by definition). If we're going to subsidize unprofitable activities, we should do that as a society, not by funneling cash to Uber's owners.