IT HAS BEEN a bumpy journey for investors in Uber, the world’s biggest ride-hailing company, since it was listed in 2019. In its first six months as a public company Uber’s share price plunged by a quarter as doubts swirled over whether the perennial lossmaker would ever turn a profit. Thereafter it has seesawed, soaring amid the pandemic-era craze for tech stocks, then diving back down as rising interest rates spoiled investors’…