[IKantRead]

I never claimed that they "require a traditional publisher", in fact I explicitly point out that you can pay for these yourself (though I can't imagine putting together a good team of editors without having prior publishing experience).

My point was that, in response to the parent claiming there's nothing traditional publishers offer, these are things that traditional publishers do in fact offer an author. If you write for a traditional publisher you mostly have to just worry about writing, and, unfortunately, marketing these days.