OK, now who thinks buying the single component that can influence the system's sound the most and are available in the most different brands/models without listening is a good idea? Electronics, I can understand buying this way because they impact the sound less but the room's acoustics, the speakers' voicing and the listener's hearing and preferences makes this a method of buying that risks disappointment more than any other, IMO.
In other words, if I was a retailer who carried brands that were sold widely on the internet and people were coming to my store to listen with no intention of buying from me, I'd be seriously PO'd. That's why most manufacturers who have B&M dealers don't allow internet sales of their products if the buyer wants a warranty. Before anyone says that the B&M dealers should match the internet price, NO! That's not how it should work.