I assume you’re going for the “is it impossible, or just highly improbable” route again. Is the musician example intended to be something that is possible? Do you think that example is possible? I think that even healthy, sustainable competition would prevent that example from ever happening. Which is part of the point: if you only have ethically run businesses, you’ll always have healthy competition, and thus none of them can ever reach such an absurd amount of wealth over the others.
But let’s say you’re an unethical multi billion dollar corporation in the music industry whose bottom line is being impacted, and you’re willing to do whatever to get part of that. Let me ask you, what would you do to get your piece of the pie? Feel free to just look around for inspiration :(. You’d likely start by offering to buy them out. If they refuse you have several options: creating a copycat that sounds similar, but pump out 10x more tracks to flood the market, pay off all “radio stations” (whatever companies you pay to stream music in random stores and clubs, etc) to prioritize your music, pay SEO professionals to ensure your products appear before yours, pay lawyers to find something to litigate over to stun your ability to make any more music. Someone who is actually in the music industry could probably come up with better ideas than me, but the point is, a company willing and allowed to play unethically will always beat out the ones that aren’t.