It's interesting, but there is a real difference between, has found product-market fit but unprofitable because trying to grow in "silicon valley style" and no product-market fit and might never make money.
To my mind, Uber chooses to lose money. They don't have to spend 700m a year advertising, and they could probably trim the fat in other areas as well (and have in the case of COVID--19),
Leaving COVID--19 alone for a second, the operating expenses have to be taken with a grain of salt, I would be very surprised if they HAVE to do a lot of those to keep the business from falling apart.
