> But that's hard to square with the fact that 7 years since IPO the share price is up 75%

Uber has severely underperformed the market. Passive S&P500 index funds had a total return of more than double that in the same time period, while also having less risk than investing in a single stock.

Obviously much worse outcomes are possible than Uber's, but it's far from a massive success, especially after all that hype! This isn't to say the old common wisdom about excessive funding rounds was valid, but it's not completely invalid either.