So stop buying from Amazon. Period. They have obviously decided that they'd rather sell you crap, telling you it's a genuine item, than the real thing. Why give them any more of your money?
We have fraud laws to starve fraudsters of new victims. We have fraud laws so we don't each individually have to vet every seller. The more due diligence we have to do, the less business we're going to get done. It's better for the economy as a whole as well as us buyers individually if we can hold Amazon accountable when they fuck us over.
Yes, and the most direct way you can hold a vendor accountable is to stop giving them your business.
If there are other legal, political, or regulatory avenues you wish to pursue, that's not mutually exclusive to taking your personal dollars elsewhere in the meantime.
Are you referencing any fraud laws in particular? They could be useful resources for folks on this thread who've received fake/counterfeit items.
As I understand it, although purchases are made through a single service (Amazon), products are sourced from a large number of sellers who list items on their marketplace. It could be useful to find out how the laws you mention are written and enforced in that kind of environment.
At the moment I'd suspect Amazon are keen to handle disputes/concerns directly which might lead to fewer regulatory complaints from customers and avoid scrutiny.