I own both TGP's and an affiliate program. I think the problem is lack of knowledge on the part of a typical gallery maker. How many times has a TGP owner seen a sponsor being promoted with the WRONG content. This isn't gonna sell if the galleries are not properly designed. I can see why hosted galleries are becoming popular for this reason.
Secondly I think that the responsibility (if they choose to do so) would be for the sponsorship programs to not accept affiliates that do not promote their "exclusive" content. Nothing forces a sponsor to take a signup that came from a gallery showing pink or no pink. They do so because it makes them money.
The responsibility lies in the sponsor on what they want to accept and not accept. Personally my sites convert well off TGP traffic, maybe it is because I promote them off TGP traffic so that is what I have to go by or maybe I just got lucky.
I agree with the "teasing" of surfers because my galleries have made more money since I have decided to go that route with them, but I think part of the issue is the content the sponsorship programs give out to promote, I am guilty of giving out content that shows to much as well. I think we need to look more at the sponsorship programs and get those working together instead of forcing our main traffic source (at least mine anyway) to change their ways of doing business.
Just my
AJ