Audiophilia will probably not be much like the present going forward. It is fairly obvious that the retail model will be reduced to small, relatively rare specialists and a few larger entities like Magnolia relying on a presence within a larger entity carrying video and computer/wireless/network products. Even the market for conventional network products will be displaced by virtual 5G secure private "networks." Vinyl is enjoying a resurgence, but I doubt that it will grow much larger.Its requirements in equipment, space and cost will work against it as a medium. It won’t disappear, but it will be constrained. There were reasons why vinyl LP was displaced by CD. The future for magnetic tape is even more dim. It exists as a legacy product and has little capacity for growth: expensive, reliant on scarce repair services for costly and increasingly out-of-production recorders. Even tube gear in its revival has probably reached its zenith, mainly because the technology is vintage, the production of necessary replacement tubes is tenuous and limited to relatively few countries/manufacturers and long supply lines. The fact that there is such a high-priced market for specific vintage tubes suggests that new production is not surpassing the quality of the old. I am sure tubes won’t go away tomorrow, but twenty years from now, who can say? Much of the tube interest is by older consumers who will stop consuming in one way or another in 20 years.
Lifestyle products have a bright future, however, and at every price level. Bose and others are regularly disparaged on Audiogon, as are the more modern iterations in Sonos and Bluesound and others, but that is where the growth is. Higher end makers from Europe: Linn, B&O, Electrocompaniet and others have got the memo, as have makers of traditional speakers now expanding their lines to active products that offer performance and compatability with modern living spaces. Clunky, bulky and expensive multi-box hobbyist products that require their own dedicated "listening rooms" will find fewer buyers.