http://www.amazon.com/Competition-Michael-E-Porter/dp/0875847951 http://www.amazon.com/Competition-Michael-E-Porter/dp/087584... for starters... Plenty of emp

http://www.amazon.com/Competition-Michael-E-Porter/dp/0875847951 http://www.amazon.com/Competition-Michael-E-Porter/dp/087584... for starters... Plenty of empirical evidence out there in the decline in shrinked wrap software, the disappearance of successful IPOs, and the inability of the vast majority of websites to charge for any service whatsoever.