I agree with Mitch2. The market has changed dramatically. Personally I would add that many people have come to realize that at least on the electronics side there is little point in listening tests or demos (I know many here disagree). As long as I can find some good science and engineering based reviews with measurements to be sure I am not buying into some snake oil product, I am fine with buying electronics online. And I agree it is only fair not to abuse the hospitality of brick and mortars shops. I don’t do that with audio, but also not with one of my other passions, outdoor gear.
Speakers are, of course a different story. At the same time a listening comparison is not that easy. To do it properly, the output level of the speakers you are listening to would have to be equalized to within 0.2 dB, and that is quite an arduous job that I have never seen any shop do. If they did, that would be a good argument for a brick and mortar shop. I did a listening test when I bought my subwoofer, but knowing what I know now, that was a futile exercise, because what I was really hearing was the room interaction rather than the sub itself.
So like it or not we are largely groping in the dark with little to help us reduce the playing field. Sadly, there are very few serious hifi publications left that provide more than subjective (and often paid for) waffle.