I haven't had a problem with top products being counterfeit, but maybe because I tend to buy them directly from the manufacturer (Apple) or from brick-and-mortar stores where I have the goods in-hand before purchase (Nikon); I'm willing to pay a more those ways for the assurance that I'm getting what I think I'm getting.
The bigger problem I've found is counterfeit & knock-off accessories. Once I've paid US$X,000 for a products, I can't trust Amazon to show me suitable batteries, chargers, lenses, etc - there's so much money in selling those things, and it's so easy to make crap that ...works... but which is problematic somehow (dangerous knock-off chargers, batteries that swell or die, etc).
Amazon is great for stuff that nobody would seriously try to copy & undercut in a deceitful manner. Yes, you can get great deals on stuff people would seriously try to deceitfully copy & undercut, but with enough money riding on it working right, I'll spend a few bucks more elsewhere to be sure I'm getting the real thing.
https://www.google.com/search?client=safari&rls=en&q=amazon+...
(I do think this is probably a hard problem, however, so I don't necessarily accept that Amazon isn't working hard on it...)
I'm sure it's a problem, and I certainly hope Amazon is trying to fix it, but I don't think it's the massive company-destroying thing that people are making it out to be.
These sellers filled up pages of the available products list and had very little feedback on their profiles. People who actually bought from these sellers never actually got their consoles and had to file an A-Z claim with Amazon to get their money back (the seller always marked it as "shipped", so the credit card payment went through, but never included a tracking ID). I would imagine they were long gone with the money by the time Amazon processed the refund.
Thankfully my BS detector went off and I stopped trusting third party listings for that product.
Example: https://www.amazon.com/TRX-PRO-Suspension-Training-Kit/produ...
More recently, I got a counterfeit fitbit charger that flat out didn't work. It got replaced, but it's still annoying.
That Jeff Bezos is "allowing" counterfeit goods on Amazon to ruin the customer experience? Yes, that's untrue.
I'm sure if he could snap his fingers and fix the problem, he would. But the problem is a bit more nuanced than that, and can't be solved over night (perhaps ever, if the analogy is digital piracy).
Well, he invented the idea of losing traceability by commingling inventory "in good faith". He can reinvent traceability any time. As much as HSBC's business became moving drug money, it pretty much became Amazon's business to find gullible customers for counterfeit goods.
I spend thousands on Amazon a year, if I have a well-documented counterfeit claim I want a quick and easy refund.