What I'm seeing is a polarization of the AV marketplace.
There will always be a market for expensive, custom installation home theaters. It's not like movies are going away any time soon, nor people's desires to watch movies. And a custom home theater for the wealthy crowd is practically a given at this point - even if they barely ever use it, just like a pool and a chef-quality kitchen. So expensive AV Processors will always have a market. In fact, that market is growing. But a lot of it is just ridiculous "more money than sense" type of gear. If some rich person says they have $2 million to spend on their home theater, you better believe their custom installer is going to find a way to meet and exceed that budget!
On the low end of the price scale, if people are buying anything beyond the speakers that are built into their TV (and frankly, thank God for how awful flat panel TV speakers are, because they're SO bad that at least even people who are completely uninterested in AV decide that they need something better!), they're buying SoundBars.
Mass market AV Receiver manufacturers used to have us - the middle class AV enthusiasts - and the entry level crowd. But now they only have the middle-class enthusiasts. The entry-level is almost entirely seeded to SoundBars now. And since their only customers are now enthusiasts, we're not the sort of people who buy an AV Receiver on impulse or because a big box store salesman said it was good. We do our research, and we price compare.
So if you're not selling to the custom installation crowd, and you're not selling to the mass market, how are you going to survive? Particularly when your only remaining customers are a very demanding bunch who want top level features for zero margin prices.
Fact is, we are a niche. AV Receivers that DON'T start at $20,000 are now a niche item. Our absolute best bet is going to be a brand like Integra or Anthem that sells to the custom installer market, but at somewhat more reasonable price points.
There IS a market. So someone will continue to fill it. But if you're the sort of person who's living in the under-$500 bracket for an AV Receiver, I really don't think the future holds good news. At the $1000 - $5000 price point, some AV Receiver brands will survive to service the enthusiast and "low-end" custom installer market. Having those two customer bases overlap will be enough to keep AV Receivers within that price bracket viable. But I really see everything below that just becoming SoundBars. And maybe that's fine. We love the sort of 5.1 speaker system we can currently put together for less than $1000 all in. But a decent quality SoundBar with a wireless subwoofer and two wireless surround speakers for the same price or less doesn't actually have to sound a whole lot worse.
Meanwhile, if you're mostly looking at $1000 and up AV Receivers, I think we'll still have a fair amount of choice. Maybe Denon and Marantz won't be a part of that. But I really don't see there being absolutely nothing in between SoundBars and $20,000 Processors. The middle is definitely undergoing shrinkage, though. So us middle-class enthusiasts? We just need to buddy up with the "low end" custom installation crowd is all