@Miroslav Glavic - I think there should be limits to non WCSF events, the other WordCamps. THEY ARE NOT AS BIG AS WCSF.

But if read between the lines here, other WordCamps could easily be as big as WordCamp San Francisco but the foundation told those organizers that the amount of sponsorship money was too high for their event which means they had less money to put towards making the event better or, getting that bigger venue to hold more people. There have already been WordCamps in Chicago and New York that have had over 500-600 attendees, it wouldn't take much to be as big as WCSF, attendee wise. But when you have people telling you how much money you can get from sponsorships, it makes it hard to hold events that big.