The only point I was trying to make is that Chefs seems happy with $30 and $18 for a entree, appetizer and desert. I don't think they are too unhappy with the $25-28 they get from Disney for a meal. If they were, they wouldn't have been part of the plan.
But do you KNOW whether they are happy or not? (Hey, two can play at this game. )
I think it's a sort of "darned if you do, darned if you don't" situation for the independently-owned restaurants. If they don't sign on to the DDP, they lose the DDP participants' business for a year. While they probably don't lose money on the DDP, again the profit margin is much lower when you must provide $50 worth of food, beverage and service for revenue of $25-28 (as compared to providing $50 worth of food, beverage and service and receiving $50.)
Many of the DTD restaurants opted-out of the DDP, the difference being that DTD is not a gated community. It doesn't rely on the ticket-buying public as its only customers.
The in-park restaurants may not be crazy about the terms Disney is offering, but if that traffic is the difference between turning a profit and not turning a profit, the decision is reluctantly made.