I think they've squandered it so much that I think it wouldn't be impossible for someone else to build a site with substantial traffic aggregating and sanitizin

I think they've squandered it so much that I think it wouldn't be impossible for someone else to build a site with substantial traffic aggregating and sanitizing Amazon results (whether you could profit off of that might be a different question). (I have seen people try this but it's immediately apparent that it's not hand-curated. I think selling that point needs to be priority.)