Counterculture is indeed about rebelling against something, and it indeed dies on the vine when corporatized, mainstream culture has already absorbed it and there's no more cheap-and-easy rebellion to be had. But hey: suburbs are fucking alienating for everyone. If your only moral or political principle on which to take a stand is, "I feel alienated in suburbia", you're about as Homo Sapiens as it gets.
The real lesson is not, "counterculture should be preserved by having smart, rebellious, artistic kids grow up in the suburbs." The real lesson is, "This is why the overwhelming majority of people don't choose to live in suburbs when there's any kind of alternative available, but instead in either real cities or real countryside."
Also, for a bonus lesson: you can't spend your life rebelling against the suburbs, or in fact against anything whatsoever. At some point, you will either become just another hipster, or your "rebellion" has to be for something.