Essentially DAZ is saying you can't produce something that damages the sale of one of their items unless you agree to sell it exclusive through DAZ. Witness Michael's Morphing Clothing pack and bodysuit which would allow Mike 1 to pretend he's Mike 2. It's sold at DAZ, but a "Tailored" bodysuit that does that same thing (even if it's free) is in violation... Unless you sell it at DAZ.