I reject your false choice.
The money here went to Apple and Amazon (shareholders and execs, which is a separate discussion) for developing new legal pricing strategies and distribution channels that did not and could not exist before. On the musician side, recently money has been pouring in floods to House DJs who wouldn't have been given a chance on mainstream radio in the 90s.
In other words, some people got very rich off of making something new very cheap for everyone else in a new way. There was a loser, like there always is, in some musicians and traditional labels, but the loser was making money off inefficiencies in consumer access to music, which is arbitrage and inherently risky.
There doesn't always have to be a bad guy...