Now they'll need to pay off a local mailman to give them all of Google's letters with an address in an area they control so they can register a town's worth of addresses, big whoop. It'll cost them a bit more than the registration fee, but I doubt it'll be enough to solve the problem.
Yeah, this is a huge amount more work than, like, nothing.
How? You've now moved the level of sophistication required from "someone runs some bots on the facebook website" to "someone is now committing complex fraud against a government".
If the only people who can run scams are state sponsored, that's still vastly better than the status quo.
> Amazon has a huge problem with packages being sent to fake people at different addresses.
This usually involves those people getting weird packages and not doing anything with them, it doesn't require attacker-controlled addresses.
This could work, but the issue here is that a lot of these scams rely on the "zero cost"-ness of turnup and use that as a asymmetry. If it costs you nothing to turn up new scam-accounts, and it costs me something to investigate and remove them, you win. If it costs you $10 to create new scam accounts then as long as I can get the EV of a scam account below $10, the scam isn't worthwhile.