Sure they did. And that's why I said "Any of the large "products" can (and some probably will) fail, but the tech behind it is like the Internet."

But then again they also said the same thing about Amazon. And google. And (at one point) MS. And the others.

To reiterate: some might fail, but the field as a whole won't go anywhere. To look at the past 3 years, look at the current demands, and pretend that they'll all fail is insane. The proverbial cat is out of the bag, and it's not going back in.