I have been saying for 3 years that this is a Dot Com era Ponzi scheme, and that it will go bankrupt. Appears that everyone has finally come to the same conclusion.
The more they sell, the more they lose money because they sell things for a loss. Any idiot can do that.
My prediction is that this will go bankrupt by 2022 if not sooner. They will no longer be able to finance their losses by issuing more shares or borrowing money. They will run out of cash in 2 years, book it.