[BlackFly]

You've misunderstood the person you are replying to. The insinuation was not that the labor is unpaid, the insinuation is that the labor is paid for by someone other than the publisher.

The ultimate point being that the group that pays for the labor does not get the benefit of the labor: each member of the public must individually pay for access to the article. This situation is absurd: they have already paid for the article's production.

This is why the most powerful open access initiatives are being driven by grant agencies. They are in a position to unequivocally state that the research they are paying for must be open to the public since they grant the money on behalf of that very same public.