>You could have made a parallel argument, before Youtube, about how people wanted only professional content, why a service for user created content would never work etc, because that's all that had worked, up to that point.

I remember in the early days people in the entertainment industry dismissing youtube as a useless piracy website which could never deliver any worth while content by itself.

This was in 2006 when the only real use for youtube was to watch music videos because of the 10 minute video limit.

A lot can change in 10 years once the base technology is in place.