That drive causes people to try a lot of ... "plans" might be a more charitable word than "schemes" ... that might otherwise have never seen the light of day.
And the media bears a lot of responsibility for this, too. WeWork is an office space rental company. It should have been trivial to figure out how much money they were taking in, and how profitable they could become - if they could become profitable at all.
Valuing them at thirty bajillion dollars was just stupid, but stupid gets eyeballs, and that's what the media thrives on. "Office space leasing company rents desk space" isn't going to make the front page of Hacker News.
I remember looking at the Russian economy in 2001 and thinking the same thing.
That makes WeWork about 1/11000th of the economy and so about 0.0091% of the economy.
For every WeWork, there's hundreds of companies like Anaplan, Twilio, Zoom, Shopify, Veeva, and Okta. You don't read about these companies as often because they're not circuses, but they just continue to build products people use.
My gut reaction is that not all that much of it is, and if it's increasing, it's simply due to global low interest rates.