At what point is Amazon complicit in the sale of counterfeit goods from a legal standpoint? It is an obvious problem and Amazon doesn't appear to be doing much

At what point is Amazon complicit in the sale of counterfeit goods from a legal standpoint? It is an obvious problem and Amazon doesn't appear to be doing much to counter it. Seems like only a matter of time until they get sued by a brand name manufacturer just as YouTube got sued by content producers almost a decade ago. Not that I look forward to the day when Amazon sellers can be taken offline by a copyright notice like YouTube users today, but that is where we are heading.