It's true that tabs would be nice sometimes, but usually Emacs users have lots of files open all the time. The usual open-edit-close workflow doesn't really app

It's true that tabs would be nice sometimes, but usually Emacs users have lots of files open all the time. The usual open-edit-close workflow doesn't really apply to Emacs sessions. An Emacs tab bar would resemble that of a browser with 100+ tabs, so the problem is that the people that would be capable of implementing that feature wouldn't use it in the end.