I would assume they mean nobody does everything by themselves and so can't exactly be considered "self-made"
There are a lot of people involved in creating a new album and touring the country. If these people didn't work for her then she'd be playing guitar in a bar for tips. She deserves to be rich, but the people who work for her deserve fair pay and a 0.001% cut isn't fair, it's just the way it is.
Nobody gets through life alone, and for fucking sure, nobody succeeds in life without the help of many many others.
If the way we measured success ever gets any further from the way the "universe" does, we'll never fuck again and all these piles people have will just rot away. Capitalism is soooooo grody