These files are not an 'abstract concept, no more than an executable file is an 'abstract concept', and they certainly don't qualify as 'knowledge'. They're just a short cut to actually having to learn how to do something yourself. So spare me the 'knowledge' angle. The only knowledge learned from these files would be…

What a bunch of bullshit. You can't repress knowledge. You cannot unsee what has already been seen. You cannot hope to stop the flow of information of which there are already thousands of copies.