Guitar shops are the same. Guitars, much like fishing rods, have reached the limit of their evolution, unless we are talking about micro incremental steps. Any extra evolutionary steps would render them 'non guitars' Yet there's still a whole industry of magazines and shops out there selling you the latest 'stuff'. Leo Fender invented the Broadcaster which became the Telecaster in 1949. Like wise Les Paul invented the Les Paul in 1954. They are still industry standard instruments, yet somehow they still manage to bring out every couple of years the 'latest' Telecaster or Les Paul.
A friend of mine used to run an angling shop and as he used to say 'I'm not here to catch fish, I'm here to catch anglers.'