I think your argument somewhat presumes that we all agree on some platonic ideal of a product.

Let's pick restaurants as as product: I have some favourite restaurants that for me beat most other restaurants on multiple dimensions (taste, freshness, service, location, price). And there are very popular restaurants I rate poorly on multiple dimensions.

I know other products that I think are both cheaper and better than the competitors, but I can't think of any products where I have many many purchases within the sample space of different products.