Thanks, kenmtl, for that example. I understand what you're saying about modified patterns. I think "inspired by" would fall under "derivative works", and some folks cover those in their TOUs. There was a pattern in one of the threads here, I'd have to find it, that was a bunch of apples and leaves. Someone at MTS, purplepaws maybe, made one similar. They both used a texture they found online. The TSR creator moved some leaves around a bit. People need to understand moving those leaves did not make it a whole new texture, the original creator's TOU should still apply.
ok, found the linkies from our threads, and look, it's another one by Apple
warm biscuit bedding, makers of the apple design (unless they got it from somewhere else too, regardless, if someone used a swatch from warm biscuit, they should credit warm biscuit)
TSR Apple's apple patternsimcredible apple patternMTS purplepaws apple patternedit:
Now, to be fair, not all the free creators credited the apple pattern to whoever, so that weakens the argument that TSR should slightly (though it's still a valid argument). kenmtl is right that the case is strongest when it's a direct copy, like that rectangle motif pattern.