It might be true that music and media have been squeezed. I find it surprising, because a few years ago there were some articles stating record profits. But let's say it is true - many traditional domains are in decline, and creators are not creating quality content as much as they used to, because they receive less income.
That is not necessarily a bad thing. People stop using old media and forms of art because they are developing new forms. In the past we were talking about fishing, now about JavaScript. We used to get all our reading from books, now the lion share is taken by forums and online articles. We are developing new ways to create and enjoy, and that is why the old ways are in decline.
For example I spend more time reading arxiv articles (and their github repos when available) instead of newspaper articles. I prefer the commentary of a small subreddit to that of most newspapers. I take music discovery in my own hands and have never been happier (much more than in the age of CD and radio, when availability was scarce). I almost never need their guidance to discover music, or their articles to discuss events. I can get the gist of an evolving media event from Wikipedia, and it's much better structured. If I am interested in gaming, I can watch free live game streaming created by other players. That is why the old content creation for money is in decline - because we are creating new ways to get what we need.