Everything changes, and if you can't change with it or adapt to it you will not succeed in it. This is true in every business, not just the music business.
I'm in the security installation & servicing business. Been here 23 years. When I first started, I could sell a good system at a reasonable price and make a nice profit. Along came the mass marketers and started giving the systems away to get the monthly monitoring income. I either had to play the game by their rules or find a way around their rules to survive. I moved my focus to the commercial markets where they were not giving away the free systems.
In the music business.... it's very similar. Free or cheap music is available a-la-cart from many online retailers and also streaming. The royalties to the musicians and writers is a meager tip of the hat for all it amounts to. A millions streaming plays might net you a couple hundred bucks? What's up with that?
The so called big artists have to rely on concert ticket sales and merchandising at the concerts. Getting into that level of the business is extremely hard. However, local musicians who are willing to do the hard work and not give up, can build a local following and make a decent living playing the clubs and selling their CD's and other merchandise to their fans at the events and clubs they play.
Pompalmoose is one band that I can think of who has done this quite successfully up to this point.
It's a full time job though. And requires hard work and dedication..... you have to be writing, recording, producing, booking, marketing, selling, performing, traveling, keeping the website updated, and so many more things, and doing them all well, and at the same time.
While times and circumstances have changed, working hard to achieve something has not. Garth Brooks, Dave Mason, Bruce Springsteen and so many others didn't get where they are by complaining about how bad things were in the business and how they might get screwed.... they went out and played the cheap gigs, the free gigs, the sucky gigs, and knocked on door after door after door, until someone somewhere finally agreed to listen..... and the rest, as they say, is history. I'll bet they learned lots of marketing skills, how to negotiate better rates, and how to merchandise along the way.
Go and carve out your piece of the pie.