Not so fast. Things are different in Europe. For example, contrary to the US, in the EU you may sell your software license to someone else.
That being said, in this case, it's a bit different. For the EU, a software license is like a book. If you buy a book, you can do what you like with that book, except making copies. So you can sell your book, if you like. Same thing with software licences.
Autodesk doesn't sell licenses anymore; only subscription. So I guess it's a bit different. Following the book-analogy, subscription is more like a library. When you're a member of a library, you can read their books. But there's deadline. You have to bring back the book before a certain date. And if you quit your membership, you no longer have access to their books and any library books you have should be brought back. The same for software subscription, I guess.
The weird thing with Autodesk is that subscription is tied to a user - not a company. I guess this Italian company somehow managed to get subscription for Revit and they now sell the seats to others. That's probably not compliant with the EULA, but this company is around for at least five years, so I guess all the companies for which they sell licenses have had more than enough time to act.
There's a lot of companies selling used licenses for many years now - and they are still around. To me, this looks like the Microsofts and Autodesks etc. don't seek a legal battle with the EU....