All of that is a direct consequence of low interest rates. If money is cheap and easy to borrow, there is less pressure on a business like Uber to turn an actual profit. Instead, investors will encourage them to grow aggressively in the hopes of capturing the market. Once liquidity dries up, there will be more pressure to actually make money.
But the economy is working as intended and it's actors are merely reacting to incentives. The question is whether the wrong incentives have been set that have created large sectors of the economy that are completely dependent on permanently low interest rates.
