IANAL (I am not a lawyer), so anything I say has absolutely no legal meaning, but the very idea of a person saying their models and meshes can't be used commerically hits me as a lost cause, why not say the items can't be used in poses you don't like, or only with a blue background? Or something else equally silly? Not to mention that some of this is part of the Poser website battle, which I'm not going to get into.