Earlier quoted context omitted.
Somehow Home Depot sells a lot of things and none of them appear graymarket or fraudulent. This problem exists because Amazon wanted it to exist. They chose to do business in a way that avoids traditional checks and balances. The scale of the problem is entirely on them.
What about Walmart? They have a big online presence and sell a lot of 3rd party - anyone know what their counterfeit situation looks like? I've only ever bought diapers from them and if they were fakes it seems oily rags (or whatever is in the fakes ones) absorb as well as the real deal...
I don’t keep up with the marketplace requirements as maybe I should, but historically the biggest difference was Walmart.com required sellers to be based in the US, and amazon.com allowed sellers from all countries. This hurdle alone can make sellers much easier to chase down and throw the legal book at them.