The recording industry have tried the "above CD quality" thing to get people to re-buy their music several times before. Each time it flopped, and I fail to see why this time will be different.
The older members of the music-listening public are more likely to be audiophiles and have more money to throw at kickstarters from classic rockers. They are a bit slower to adopt new technologies, but are now fairly well on board with iPods and MP3s. However their ears aren't always high definition any more.
The younger members of the music-listening public don't really bother so much with the concept of "owning" music. It's like fresh air – so long at it's streaming at you, it's good and who cares about owning it.
No mass market for buying high-definition audio downloads is to be found in either category.
