There is one small nugget in the article that demonstrates exactly why they failed: "This final challenge—product market fit" They invested a very large amoun

There is one small nugget in the article that demonstrates exactly why they failed: "This final challenge—product market fit" They invested a very large amount of money, and put the most important challenge at the very end. "This final challenge" should never, ever, ever be the final challenge. Product-market fit should be the first challenge. Everything flows from matching the product to the market. The fact that they believed this was "the final challenge" shows that they were making decisions in the wrong way -- a way that brought them failure. I only hope they consider profit/market fit BEFORE they spend more of their investors money.