I'll be the devils advocate here.
How good an artist are most of the pattern makers? I ask this because, following some peoples logic 99% of all patterns are actually copy-writ to somebody else, not the pattern maker. Unless the pattern maker dreams up the pattern, puts it down on paper, or takes an original photograph, they can not be the owner of the copy-write.
Most find their pictures/ photos somewhere, then convert that said image into a pattern and I wonder how many have purchased or gained permission to do so?
According to some, only those who are 100% invested or have purchased rights can make patterns, so if this is the case, I would suggest everybody go and chuck your collection in the bin, because somewhere, some how we are all breaking the law.
Everybody has their own moral compass, live by yours.. I live with mine.
live and let live.