I’m not sure I can agree with this in the broad sense that is applies to all or most creatives. I’m a creative, and I’ve never had trouble getting paid for my work.
What you’re really saying is that some creatives, in certain industries, who create things that are more product than service, are finding it harder and harder to get paid, because their work can be transmitted for free.
And yes that’s absolutely true. Being a musician or writer is a completely different job than it was 20 years ago. And I’m sure it sucks!
One solution is to stop creating commodities, and use your creative talent in other ways.
Another part of the problem is when people are willing to give anything a way for free then they set that expectation and it’s hard to back down from it. That’s why I always encourage even young creatives to avoid giving away their work for free under any circumstances.