What a chore it would be to get out of bed in the morning and get to work if we had to think our way through each step, and be sure we did not overlook one. We need our habits. And we don't want to change them. A book with a title page at the end of it would be unsettling. The form and format of most magazines is even more consistent, and rigid.
Newspapers are even more similar, one to another.
The emphasis is on the first fold that shows on the newsstand. Headline creation is a major task. The way stories are written is the same, with the key points up front in case the reader does not continue. Take a look at your bookcase. Hardbound books are pretty much the same in height.