I disagree. The quality of the original writing is what matters. And of course that comes with editing and proof-reading and all the rest, that's the editing and publishers job. The presence of quality is what counts.
No amount of editing and proofreading and fixing can turn poor to mediocre writing into a success story.
I value good writing, the effort it takes, and the pleasure it gives me too much to allow it to be reduced to your rather dismissive, reductive 'editing, proofreading and fixes' position.