As a reason for not releasing it? If so, that's not a terribly good reason. I mean, clearly they already do that -- this simply permits those with lesser means to employ the technology. In general, I'm not fond of "but someone could misuse it" as a reason for not releasing a technology -- especially if it already exists in another form with limited accessibility.

Like this: http://www.dubset.com/mixscan/#intro-2

My understanding is that Apple & Spotify have signed up to these guys with a view to correct payments for artists with user uploaded mixes [1].

[1] http://variety.com/2016/digital/news/spotify-apple-music-rem...