For maestro and anyone else who may be interested. The Japanese music market is a strange beast. A lot of record labels are owned by/have ties to consumer electronics companies (Sony is the most obvious example so I'll use it). Sony is one of the world's biggest manufacturers of CD players. It's therefore in Sony's best interests to stifle digital music as much as possible so that people still keep buying CDs and CD players. Notably, most attempts to get digital music off the ground in Japan have come from foreign companies (Apple/iTunes, Napster, Amazon). Napster Japan ended up having to close not long after it opened because of the lack of support from Japanese labels. It was 2012 before Sony Music Japan finally agreed to license their catalogue to iTunes Japan, which might not seem like a big deal, but it is.
The Japanese physical music market is a lot like the anime market over there. Discs are expensive (~£25 for an album at current exchange rates) and there'll be all sorts of limited edition goodies so the otaku have to buy all the albums. CDs are /incredibly/ cheap to produce, so the profit margins are very high. These profit margins shrink drastically with digital music, so...
The harsh anti-piracy laws which were passed in Japan a couple of years ago were largely due to pressure from the music and film industries, and they seem to partly have had the desired effect, i.e. that people are now so scared they might be downloading something illegal that they don't download anything. They don't seem to be going back to buying physical media though, as the physical music market has shrunk the past couple of years.
It's getting better though. There's a domestic streaming service called Recochoku which is owned by a consortium of music labels and mobile media companies, and that's taking off. Younger people are more interested in streaming than the previous generation. I'm genuinely curious as to how Apple Music will do in Japan. Companies are also starting to realise that people want more for their money if they're going to spend £25 on an album, so deluxe releases are becoming more common.
Ask me if you want to know more about any of it.