Earlier quoted context omitted.
Derek did not became wealthy. He gave the $22 million dollars he got from selling his company to a fund, and gets over $1000 each month, hardly "wealthy". Derek has worked in a circus and knows how to live cheap enough. He also has lots of friends so he does not need to pay for lots of things. I know people that earn in excess $10.000/month and spend it all or even get into debts.
Wikipedia disagrees: >Derek Sivers transferred ownership of his company to a charitable remainder unitrust for music education, and had the trust sell it to Disc Makers. This agreement requires the trust to pay Sivers 5% of the trust's value annually (hypothetically $1,100,000 pretax, based on a sale price of $22 million as reported by Sivers)[4] until death, while upon death the remainder will ultimately go to chari…
Understandable though if you've read his book because he's had big problems with the IRS in the past and probably really wanted to show them his "FU money."