Excellent BBC series still available on iPlayer in the UK about the evolution of consumerism and how we are all being conditioned to buy like lab rats or at the very least never grow up. Last episode (no.3), has a very interesting section on the Games Industry - about half way through - well worth a watch if you can handle what it tells you!
http://www.bbc.co.uk/iplayer/episode/p01zxnk9/the-men-who-made-us-spend-episode-3
http://www.bbc.co.uk/iplayer/episode/p01zxnk9/the-men-who-made-us-spend-episode-3