>Have any sources on that? Sellers are suspended quite often.
Sources that Amazon has gotten worse in this area over time? Sure. My own experiences, experiences of others that you can read here and elsewhere. Plenty of news stories from reputable sources (https://www.google.com/search?q=amazon+counterfeit+problems&...)
All anecdotal, of course, because only Amazon really knows the numbers, and they aren't sharing. Fair enough to say I'm guessing as to why. I don't find it unreasonable to question their practices though. It's a big enough issue that people are noticing.
It's not hard to see why items that expire, and some of the other excluded items might cause issues if commingled.
> Also if finding the sources is so easy why do sellers selling counterfeit goods stay in the system for so long?
Have any sources on that? Sellers are suspended quite often.