It makes sense for Amazon to not be liable for damages caused by the manufacturer (should eBay be liable for everything sold on its platform?). But doesn't it

It makes sense for Amazon to not be liable for damages caused by the manufacturer (should eBay be liable for everything sold on its platform?). But doesn't it also make sense for Amazon to be liable for allowing 3rd parties to sell counterfeit or not-as-advertised items? Also, how far does this go? Where is the line crossed?