Uber has huge revenue. They have failed to generate a single cent of profit though.
Ah, yes, sorry. Still, nearly $2B revenue and funneling most of it into trying to break into the Chinese market; I don't think they're doing badly at all.
One of the things about the last bubble was that revenue without profits did not save anybody. That's not to say Uber will do poorly if there is some sort of bubble pop, but profits and revenue are not at all the same thing, and bubbles bursting have a habit of reminding us of that.