Comment by Nextgrid

It was never about building sustainable businesses or even solving a problem or gap in the market. The only "problem" that needs solving is that someone wants to have an all expenses paid "startup founder" lifestyle for a few years, and some engineers want to build & tend to a playground where complexity is the core feature.

Doing so on your own dime (or a bank loan) is stupid. Doing so on the VC's dime is smart because you can not only walk off scot-free when the whole thing inevitably WeWorks into the ground, but can start over again in a different vertical.