Even some of them were viable at the time, but forced into unsustainable growth to compete with other companies, since money was free or negative cost -- e.g. W

Even some of them were viable at the time, but forced into unsustainable growth to compete with other companies, since money was free or negative cost -- e.g. Webvan was actually a good business in certain cities, but got pushed to expand very rapidly and thus died. I'm waiting for "datahaven" to be a viable business, though. That would be really fun.