I think this is more cogent analysis than anything else I've seen yet on this topic. You should consider submitting a blog post so this can become a top-level topic.

Also, I loved this quote:

> Copying is one of the exclusive rights you have when you own the copyright in a work, that you may then license out.

I've been paying attention to software copyright topics for more than twenty years and never thought of it in exactly these terms. Its right there in the name - the right to copy it - and determine the terms under which others can copy it is exactly what a copyright is!