I go out of my way to actually purchase music/books if they’re offered in a DRM free way. If I can’t download whatever I just paid for without needing some crappy App to use it, I don’t own it. I don’t pay for things I don’t own.
While on the topic for people interested in Light Novels J-Novel Club offers DRM free Epub files of their books (username is embedded into the file but that’s hardly DRM), plus their subscription/pricing model is very fair imo. Can definitely recommend.