Uber will go into bankruptcy, and it will be the starting point of the next worldwide economic crisis.
From January: "According to a new poll conducted by the Pew Research Center, just 36 percent of American adults say they have used ride-hailing services. Sixty-one percent say they have heard of the services but hadn’t taken a ride."
https://www.wired.com/story/uber-lyft-ride-hail-stats-pew-re...
Heck. I travel lots and it's probably been a few months since I've taken a Lyft or Uber.
I don't think it's as important a company as you seem to think.
It's not as though UBER going under is going to tank the economy, but it will be a major unicorn going under, causing the entire silicon valley money-losing model to be questioned, leading to trouble raising money, layoffs which drag down the rest of the economy.
Similar to the 2000 crash.
Not great for devs looking for 6 figure jobs in the Bay Area. But not clear how broad the effect would be--unless they were triggered by more serious external events.
And 2000 crash also was associated with other things like 9/11 so it's easy to conflate.
Several unicorns going bust could be enough to kill confidence in the markets and cause people to prepare for the worst (I.e. sell investments and stop spending).
Just a hypothesis!