Is it more important to you that they paid for the software they are using or that they have a paper license for every piece of software they have installed, whether they are using it or not? You seem much more concerned over the pieces of paper (which you have mentioned several times in this thread) than with whether or not the company actually paid for what they were using. You are more concerned with the technicalities of the license than with fair payment for use, which you simply assume that this company didn't do, despite the fact that the owner claims otherwise.