No. It being an ongoing problem doesn't mean they're not trying to fix it. Is that the only evidence you have? "Problem exists"? Some problems are just... hard problems.
Google has massive issues with SEO spam, and has for a long time. Does that mean they're not trying to deliver higher quality search results?
> Google has massive issues with SEO spam, and has for a long time. Does that mean they're not trying to deliver higher quality search results?
Google has a history of publicly discussing their efforts to fix this, not to mention conflict with legitimate businesses complaining that they've been caught in the crossfire of Google's war on SEO spam.
I'd consider that powerful evidence they're trying.
Is there similar evidence of legitimate businesses getting in trouble by Amazon's sincere efforts to stop counterfeit sales? Or instead is there evidence of legitimate businesses getting hurt by Amazon's failure to do stop it?
Have you actually looked into this at all, or are you expecting to be magically "aware" of things that are not your purview? Amazon literally has a Counterfeit Crimes Unit that exists entirely for this purpose.
Any amount of searching the web would've revealed this to you. Here is a video[1] from 6 days before you made your comment about their efforts.