still gotta use capitalism to critique capitalism

I think there's an argument to be made that this is the best way to get the message out. A book with a publisher and a famous author gets a lot more attention than a PDF on the internet by someone less notable. And the notoriety of authors -- for worse -- is tied to your book deal, the media hits your publisher helps attract, and being an in-demand speaker. The theses of any prominent book is readily available in interviews, articles, etc. anyway.

It'd be better if she donated much of her earnings to a worthwhile cause, but for all I know she does.