I made it clear in both my responses that scale matters, and that there is precedence in law, in almost all countries I can think off right now, for scale mattering.

I did not make the point that there is a written law specifically for copyright violations at scale (although many jurisdictions do have exemptions at small scale written into law).

I will try to clarify once again: there is no defence in law that because something is allowed at qty X1, it must be allowed at any qty.

This is the defence that was originally posted that I replied to, it is the one that is not valid because courts regularly consider the scale of an activity when determining the line between allowed and not allowed.