I wouldn't trust a thing that company says about their cashflows until they are in SEC filings.
Capitalism giveth, and capitalism taketh away.
[1] https://news.fastcompany.com/elizabeth-holmess-net-worth-is-...
> Forbes said it has reexamined and revised Theranos' $9 billion valuation in light of recent investigations and allegations against the company.
> Citing conversations with venture capitalists and analysts, Forbes estimates that the company is actually worth a great deal less: $800 million. That takes into account its intellectual property and financing, according to Forbes' Matthew Herper.
> Holmes' 50% stake in the company would effectively be worth nothing at that valuation, Forbes concludes, because her investors would be paid back first (they hold preferred stock, not common stock like Holmes).
There doesn't seem to be evidence of that.
Uber is apparently profitable in its mature markets (mainly the US).[0]
The money is mostly used to prop up new markets, where you have to give lots of incentives to get both sides of the market in place fast (keeping supply and demand matched is the constant challenge of nascent two-sided marketplaces).
That being said, the fact that they're having to turn to Saudi money (nobody's preferred source) isn't encouraging.
[0] http://fortune.com/2016/02/18/uber-profitable-us/