I believe it is cyclic, there will always be core diehard group of enthusiasts, the expansion and contraction of the additional people in the market will wax and wane cyclically. The high and upper midlevel guns will stay marketable. The field grade stuff will remain good entry bargains for new guys in the market
I think that it is good the field grade stuff stays within reach as without entry level stuff within reach many will not get their feet wet and become diehards.
As for the proliferation of high priced stuff such as at Steve Barnett and CSMC, much of it is overpriced.