There is a huge difference between a book and code that I write. A book can be read once and the reader benefits. Useful software is usually useful for far more

There is a huge difference between a book and code that I write. A book can be read once and the reader benefits. Useful software is usually useful for far more than one use. Free trials and demos are how we sell more software. A book? It's hard to have a free trial. That said, I really have a hard time assailing libraries. Ebooks are sold to libraries at 2-5x the price I can buy the same ebook for as a consumer. Print books are sold at similar prices to consumers and libraries.