There was actually a time (back when dinosaurs ruled the earth) when t-shirts were more of a promotional item. Now they can be the major source of financing (I think Indian Motorcycles relaunch was in that category.) At the opening of the new Professor Longhair Museum in New Orleans there was no admission fee, they were just selling t-shirts for some revenue. New Orleans folks love their shirts and so do the folks that come and visit, so maybe it isn’t such a bad idea.