Oh, it doesn't only cost you $1. It also costs you at minimum a years worth of free spam mail from various "You're moving! Here's a bunch of discount coupons for things you don't need" that USPS sells your new address to.
A lot of people can benefit from that Amazon discount regardless of a recent move. Plus Home Depot is super helpful if you moved into a house. There's always something that needs work.
Of course, the only honest tactic would be an opt-in, but that would destroy the revenue the feature makes...
This would destroy a lot of companies..
I disapprove of it.