I think the very concept of "high end' and mass market acceptance or adoption is inherently contradictory, almost by definition. Long before the potential market was fragmented by home theatre, computers, gaming and earbud listening over iPods, the 'high end' was a small, rarified segment that simply didn't translate to a larger market, partly because of price, partly because of the time and effort involved in selecting and maintaining a system and partly because the 'high end' is not just music enthusiasts, but requires a real interest in the how and why of home music reproduction. Sure, there are affluent, but passive enthusiasts who would buy a good system and live with it for a lifetime- I'm thinking of the 'old' McIntosh business model.
I also think the kids today that are 'into' vinyl may appreciate its sound, but i'm not sure whether that will translate into a continuing interest in pursuing the gear necessary to achieve what vinyl can really deliver.
The promise of hi-rez digital is there as a gateway too, but while equipment prices are reasonable for DACs, and associated computer-based systems, I'm just not sure many are going to go to the trouble.
I think the 'high end' will continue, but as others have said, as a sort of 1% activity- not something that's going to gain broader acceptance. In part because it defines itself by delivering something that 99% of the consumer products on the market cannot. (I'm not ignoring the 'beer budget' stuff that is great, but who is usually aware of this? Other audiophlles, not the masses).