Where are Pioneer, Sansui, Kenwood, TEAC, Nakamichi, Onkyo, Technics, JVC, Sony, all once significant in the mass market now become either niche producers or moved out of home audio entirely. Audio just isn't the same market as in decades past. Streaming, WiFi casting (Sonos and the others), personal audio, TV/video integrations, gaming are the spaces getting the disposable dollars. Some new interest is going to come by way of people coming to the hobby from the Chi-fi entry level products (a good development, IMO) some will come in from HT looking for better quality. It won't be the waves as from the 70s with high quality solid state market coming from Japan making HiFi affordable compared to the previous generation of costly lower-production tube gear.
More potential bad news for some big names...