Short answer: Bel Canto yes. Emotiva, Peachtree no. Despite strong performance within their categories, the latter two have made too many compromises to reach a price point. Bel Canto, not so much.
Like many other things, the definition you're looking for has as many answers as people willing to answer the question. A look through these forums (this one especially), will back this up.
Personally, it's always about performance. Typically that comes at a cost, although there are always exceptions both ways. But with that cost, there comes a certain snob appeal and a sense that just because a good performing product is within the price range of a much larger population, that it is somehow not "high end enough". Is the sound of a Soulution 745 SACD player sixty times better than that of a Oppo bdp-93, like the price would indicate? Of course not. Yet despite the rave reviews, many people do not think of Oppo as high end. Why? Well, for one thing, it's mass produced and mass marketed. Another, for all its industry leading technology, there are still several compromises made by Oppo that could easily be improved (as evidenced by several companies who take the exact Oppo boards and chipsets, load them in a new case with bigger transformers, fancier LCD display and a new boutique faceplate and a 5x price tag) and only then does it meet some people's "high end" criteria. But do these add-ons mean better performance? I can't personally answer that, but from what I've read, not really. Performance-wise Oppo is pretty much the definition of excellence regardless of sticker price but you will still get some who say it's not high-end. Not me though.
The head-fi industry has experienced a sea change since 2009. It is one of the few market segments to experience growth despite the general economic downturn. Why? Again the answers will vary with the answerer, but to me it is that the price-to-performance ratio was still well within the range of mass market consumers until just recently. Of course that is now rapidly changing and the stratification is occurring in spades with cans, sources and add-ons. Is the non-limited edition $10k head fi amp(s) coming? Sure. Someone will build it, because someone will pay for it. Just look at people asking for custom built T2s, which everyone agrees is only commercially viable if the sticker price is north of $10k.