Postmortems like this are always a bit unfair. You ask employees who lost their job when the company folded what was wrong with the company, and they'll air every little complaint or inefficiency that existed within the company.

Isn't the ethos of Silicon Valley to 'hack it together' with tape and glue? Moreover, I'm pretty sure that's the reality of almost every high growth company. I'm sure you could find matching stories from within almost every winning unicorn: key bugs they didn't catch, poor decisions that cost them along the way, leadership gaffes, etc.

I think there are a couple interesting points to consider that the other comments address: difficulty of direct services, customer acquisition costs, 1099s. But we should expect more from reporters than to throw in every other possible anecdote they could dig up.