I am writing a book I intend to release commercially, and a good sized one at that (likely 1,500 pages+). I am absolutely stubbornly determined to release it as

I am writing a book I intend to release commercially, and a good sized one at that (likely 1,500 pages+). I am absolutely stubbornly determined to release it as both print and DRM-free PDF. It'll get pirated anyway (if anybody cares enough to do so), so why bother punishing paying customers?