I'd hardly blame the children of hippies for today's marketing strategies.
When TV came along in the 50's we had the first instance of mass teen hysteria with Elvis. Frank Sinatra was also a teen star, but was never as shocking as those evil rock and rollers, nor could he be sold on such a scale. It didn't take long for marketeers to realise that tapping into teen angst using this all pervading new technology was a great opportunity. Ripping off kids with the promise of a lifestyle is nothing new.
The 60's had to be the biggest buy in ever. How many kids got sucked into all that? Sure there was Vietnam and a draft which did focus a rebellious cause, but the marketing machine was unstoppable by now. Whilst thousands rolled in the mud of Woodstock, the superstar bands were flown in by helicopter.
Despite the Great Rock and Roll Swindle, most kids of the 60's survived and did not become mass murderers. The notable exception was Charlie Manson. His childhood sucked big time:
http://en.wikipedia.org/wiki/Charles_Manson