A quick bit of browsing the Amazon Basics line of products would certainly lead one to assume they had totally knocked off the 3rd party products they thought they could without getting major brand pushback.
I'm not sure about all Amazon Basics, but a few of the ones that I checked out were just third-party products that Amazon made deals with to slap their name on. Similar to how Costco's Kirkland brand is often the same as a popular brand but with a different label.
For example, the Amazon Basics guitar pedals are created by Nux pedals (the PCBs even have Nux on them).
So from what I can tell a lot of these are not ripoffs, just rebranded products. Amazon doesn't need to waste resources on manufacturing products that are already being sold on their site, but they can make deals with people that are already manufacturing those products.
Amazon never claimed it didn’t knock off other sellers’ products. What it claimed is that it didn’t use private data about how well other sellers’ products sold to decide what to knock off – a claim that was apparently false.
For example, the Amazon Basics guitar pedals are created by Nux pedals (the PCBs even have Nux on them).
So from what I can tell a lot of these are not ripoffs, just rebranded products. Amazon doesn't need to waste resources on manufacturing products that are already being sold on their site, but they can make deals with people that are already manufacturing those products.