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Well, AutoDesk clearly sold something. In the court's view, apparently, they sold a license rather than a copyrighted work.
In other words, it seems that the court is inventing a new kind of intellectual property right that expands and largely obsoletes copyright.
In this new interpretation, the use of software is governed by a license of more or less unlimited authority, where "use" is defined to include redistribution as previously governed by copyright.
EULA is the new copyright, this license is what you are buying when you procure software, and purchasing the license implies consent.
The license can be any otherwise legal contract, and the U.S. Congress is extremely disinclined to intervene in the terms of private contracts.
This is a creative end-run around the legal framework and judicial precedents of copyright. Copyright is irrelevant, because now we're exchanging licenses rather than works.