A usage restriction is an implicit contract. If you don't want to adhere to the contract, don't use the item. It's really that simple. If it's a sewperkewltotallydewd sort of item and you still can't bring yourself to adhere to the contract, develop the skill to make one yourself. The ONLY way to really get anything free and clear is to make it yourself--and even then you have to put in the effort. Nobody is forcing you to use anything that appears on any site. Thus, there is no injustice in most use restrictions, certainly not in any restriction message I've actually seen included with a download. If you're so hot up on "free" meaning "use it any way you want" then take the lead! Build a bunch of slam-down perfect models and give them away with no restrictions. Do the same for textures. Put them up and watch them fly. Lead by example.