I'm so biased that it's almost ludicrous to read my comment, but I'm an editor at an international medical journal, I get paid for it, and I work hard to make it a great publication. Among my responsibilities are that I take care of manuscript workflow and make international (non-english) submissions readable.

I am a dedicated open access fanatic, which is why I'm here (pointed by an oa source), but I think that people like me, in the medicine field, can be easily supported by advertising and medical societies.

I think your analysis is largely right apart from the question of editing, especially considering that clarity is absolutely among the most important values in scientific communication.