I digitalized all my book collection long, long time ago, and DRM FREE ebooks are much better than anything on paper. Unfortunately there is no legal software

I digitalized all my book collection long, long time ago, and DRM FREE ebooks are much better than anything on paper. Unfortunately there is no legal software solution that reaps the benefit of digital, because what makes digital great, like an open interface to access the data, makes it easier to copy. Reading on a 55 inches OLED in portrait mode, with black background, letters in green or white is gorgeous. I can search the book, make it to talk me,read on multiple columns like a newspaper, read different books at the same time(in order to reference one from another) or have an open browser. But for using digital you have to stop trying to emulate paper.