most artists have always been broke and things have always changed and so artists have always had to adapt. I think they said the genius of picasso was competing with the invention of photography by painting stuff in a bizarre new way that photos couldn't do.
Also, as a musician, most musicians have nothing to offer really except their attitudes. Most of them are arrogant, think they were cheated and lied to when all our parents told us to not be a musician and we end up bitter. No one needs another great singer and if they do, there are a million of them, no one needs a musician who's mastered all the riffs of a particular style, there are a million of them yet they moan and whine about how they get ripped off.
Too much supply, not enough demand like any other art form. There have always been a lot more actors than film roles. Who knows what kinds of talents we have missed because of that but I'm sure lots of other people could have rose up to the standards of Brando or whoever.
In music, it truly isn't anything new. Little Richard whined about getting ripped off for his music and only making half a penny off of each 45 sold and the motown artists complained about how berry gordy left them broke and sometimes suicidal. It's nothing new. Even Prince, MJ and Springsteen went through trials with the business end, it's never been a clean business to begin with.
And really, very little music by anyone really connects on a musical level, most of what sells is fresh, young and current "pop" imagery. Sometimes the quality of the songs is good, most times it's not but consumers are stupid and they'll by whatever is marketed to them.