Aside from download.com and weather.com, I can't think of too many generic domain names that have picked up any traction. They actually come off as sketchy to me and many seem to be held by speculators looking to sell. I don't see the value.
Pizza.com was sold for millions http://www.cnet.com/news/pizza-com-domain-name-fetches-milli...
So was sex.com http://www.businessinsider.com/the-20-most-expensive-domain-...
As in, how many 'generic' domains are actually being used to their potential?
Has anyone ever ordered from Pizza.com? (Or manually put that in their address bar other than right now?). I think you'd be surprised how low that number is.