I'm with the other person saying much of the same thing. Far as less reliable, they might mean all the people and companies paid for fake reviews. Google for that to find a lot of reasons for not trusting Amazon results.
Another thing Amazon is doing is competing with companies selling product through them. Competitors might differentiate a bit by making a deal, contract and/or charter, that they will never make products that compete with those using them as an intermediary. They'll always be a facilitator and nothing else far as those kind of contracts are concerned. That could help in that current and long-term risk might be reduced.
Another thing Amazon is doing is competing with companies selling product through them. Competitors might differentiate a bit by making a deal, contract and/or charter, that they will never make products that compete with those using them as an intermediary. They'll always be a facilitator and nothing else far as those kind of contracts are concerned. That could help in that current and long-term risk might be reduced.