Beats Audio success is also due to need. I have two laptops with Beats Audio, and presumably they got a few bucks from each. When buying them I wondered if there's something special about the speakers and probably made me more likely to buy them, but all laptops have speakers anyway.

Glasses are another animal, both price and the cool factor are hurdles. Not cool > http://www.freetechnologyadvise.com/wp-content/uploads/2010/...