Re(5): Concerning the Sound Production at Magic City on YouTube. Posted on April 15, 2024 at 06:14:11 PM by jatna77
That may be true for big named artists but royalty free music can be quite cheap.
Also:
"You can monetize royalty-free or Creative Commons content when the license agreement grants you rights to use it commercially. Sometimes rights owners require you to credit the creator of the content or give proof of purchase to use it in your video for commercial purposes." -YouTube Help.