What makes you think this hasn't already happened? Crust/gutter punks focus on living at the fringes of capitalism by means of squatting, dumpster diving, busking, shoplifting, trainhopping and hitchhiking. Even the visual paraphernalia used to identify one as a member of the culture are anti-consumerist by nature of being DIY and semi-permanent: tattoos and piercings can be done at home, and don't require any upkeep. "Punk" clothing is made from just about any clothing, sourced from anywhere, with designs sprayed or patched on, perhaps repaired or retailored. A lot of them even use made-up names, and throw away their old ID. Pretty much the only reliable way to identify street people like that is to fingerprint them.I have long posited that a future punk movement will revolve around off-the-grid identities. ATM, punk is dead.