The page turning time needs to be faster and the bookmarking method needs to be better. I remember times when I had every finger on one hand marking a page I was referring to, plus a pen, a pencil and another smaller book used as an emergency bookmark. Maybe a full PC screen with windows to multiple locations in the book would help too.
I agree with you. Ebook format works pretty well in a linear “text” like a long novel, where you are not constantly flipping around and referring to charts, graphs, photos, references etc. So for me, e-novels are just fine. But e-texts and e-references, not so much.
(My reference books also wind up highlighted, underlined, dog-eared, sticky noted, and “improved” in many other ways. The second time I use a reference book, I can glean the critical information in 1/4 of the time.
I don’t know how the solve this with ebooks.