@ghdprentice got to the first answer I had too, yep "the internet". That happened.
It opened a new world of used gear, then more new gear. It offered up a few hours drive -or- mail order options across a continent which hurt local dealers for sure.
Now people complain about not being able to "go hear it somewhere". Well...
Our last remaining local dealer (2 of 20) in my region is 55 years in business. He survives because nobody offers what he does. Has a loyal following, with lots of experience, and people willing to pay for it. In return they receive lots of amazing musical enjoyment, trade-in options, and more. Offers an experience the internet and forums cannot offer. Some customers drive a full day just to go there.
Some manufactures are slowly getting back to protecting dealers again.