I can understand if a company uses truly bad reviews as an indicator that they should stop carrying the product. That makes sense, and you'd have survivorship bias from that. However, the problem I see with BestBuy's approach is that even average reviews are being diluted by a deluge of 5 star reviews. Decent products should be getting 3 out of 5 stars and only the truly exceptional ones should be getting the perfect 5/5.

I sense the problem is partly due to the shortcomings of the X/5 rating system.