But if the total additional fees were still substantially lower than the reported 500% mark-ups I keep reading about—and I can't believe that the sum total of GST and other fees routinely exceeds 500% of the base cost of anything—then the model iteself still works. And if there are other regulatory hurdles, overcome them.
As far as the organizer wanting to make a profit—don't do that. That would be counter-productive to the real goal of the exercise. There are much bigger fish to fry here. Find an organizer who understands that.
Sometimes in life the best course of action is just to sit back and let things work themselves out on their own. Other times those who are in control of a situation are counting on you to do exactly that...