The myth that their rides are unprofitable is because they spend money like drunken sailors in a whorehouse. Anyone analyzing their financials has no insight into whether ride sharing is profitable in the US, or other countries because the needed information is not broken out in those reports
They have up to 100 side businesses like UberEats. They've spent a ton trying to design autonomous vehicles they don't need now and likely never will need (given they'll be freely available for purchase from Tesla, GM, etc when created). Lastly, they spend huge amounts opening new markets, basically paying drivers to sign up with such lucrative bonuses that Uber gets scammed constantly by them.
The plan is pretty simple 1) Kill almost every side business, and do a substantial headcount reduction. 2) Dump the autonomous driving development group and cheaply settle the Waymo lawsuit. 3) Focus everyone left on ride-sharing, improving the brand, and efficiently expanding internationally. 4) Clean house in the HR department and of every remaining harasser. 5) Raise another round to ensure Uber's long term financial stability.
Thats a plan that gives Uber a very long runway to achieve full profitability, even without an IPO.