system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do ghostwriters ghostwrite when they are clearly talented enough to make a name for themselves?

I mean there are known songwriters that don't sing also some people are ghostwriting entire books for famous authors.
gpt
Some ghostwriters are already famous authors, and write for a paycheck. Some might be modestly successful, but an "auto"biography from someone famous is likely to make a lot more. 

Also, some writers like their subjects and want to write those stories. People line up to write for Presidents and Politicians. 

There's also less risk to your reputation, and some writers like the opportunity to take some literary risks or break the mold they are known for. 

And, of course, others do it to get writing "credits" under their belt. Manuscripts from nobodies end up in the circular file. But the new book from the guy that ghostwrote the last Kardashian Sutra is going to get some curious glances.