It's trivially easy for two smart guys in a garage to create a competitor.
It's difficult to persuade hundreds of thousands of people outside said garage to write the actual content.
It's difficult to persuade hundreds of thousands of people outside said garage to write the actual content.
Two guys in a garage can create a wiki. Two guys in a garage with a million dollar PR budget can create a wiki and get it widely publicised. Two guys in a garage with a fifty million dollar budget can hire a bunch of writers to get the content kickstarted. But ultimately, the problem of persuading thousands of people to contribute to a brand new service is not a problem that anyone knows how to solve -- it either takes off or it doesn't.