I honestly don't think that any decent book can be effectively condensed into a page or two. The basic concept maybe but not useful background and examples.
That said, it's true that publishing economics tend to force books to a minimum length of 250-300 pages. And it's true that a lot of business books for example would probably do fine with being something in the 100+ page range, i.e. longer than a magazine article but shorter than most books.
That said, it's true that publishing economics tend to force books to a minimum length of 250-300 pages. And it's true that a lot of business books for example would probably do fine with being something in the 100+ page range, i.e. longer than a magazine article but shorter than most books.