Efforts are underway to create a Gold Open Access Publishing Organization.
It's about time! In future OA policy discussions, a group like this can be a strong voice FOR OA from the publishing side.
A good summary by Peter Suber on Open Access News.
I agree with Peter's comment that it would be wise to be more inclusive in forming this organization, and welcome fully open access publishers even if they provide basic rather than permissions OA - or if they provide permissions OA, but restrict commercial use, or use sharealike conditions. In both of the latter cases, the aim is often not to limit but to protect OA for further uses and redistribution.