[nickcarraway]

Performers don't get much royalty. It's not in perpetuity. When Diddy sampled Every Breath You Take, Sting made a fortune, And he's still raking in money. Even though only sound sample is the guitar of Andy Summers, he did not make $0.01 off of it.

[aMorePerfectUnion]

Performers don't get much royalty. It's not in perpetuity. When Diddy sampled Every Breath You Take, Sting made a fortune,

This is because Diddy did not write the song. As you point out, when you perform someone else's song, you are not rewarded as if you wrote it. And the original song writer earns from your cover. That said, Diddy earned money and earns money each time his remake is played.