So, by the same argument, they could copy the self-extracting archive to a hard drive, and then have the same thing, or not?
They even say that they already store it in a compressed form on the hard drive.
What if some future compressor (future ZIP format) is clever enough to see that you are going to save all possible permutations of something, and then saves this is a much better compressed way. Then suddenly when compressors do this, it means when you use such a compressor, you do not have copyright on the data anymore?