What makes you think so? See my previous replies. Yes it might be that parts of agreements are not valid in certain countries. But that does not invalidate all license agreements as a whole, nor does it help you a lot if a company does not help you with your needs. You still have to go to court in that case. And this also does not mean you should not read the license agreement and bring up problems before buying, rather than when trying to sell the software, no?
The problem here is that up until recently, Software companies have had complete Carte Blanche when it comes to this, and “users”\customers are typically people who don’t have too much experience with these matters in a legal term. In addition, legislators have typically been completely oblivious to the need for rules and regulations in this area up until the last few years.
Now, at least in the EU, there has, for the first time, been set a precedent and a court ruling on this specifically stating that software purchased is to be regarded as any other goods you purchase, giving the purchaser and seller the same rights and restrictions as you are guaranteed in other commerce, like physical goods.
That being said, I do think there should be certain exceptions for software, at least when it comes to certain business models and the typical type of digital “consumables”, where standard practices would seem impractical.
Reselling a license to use a piece of rendering software, on the other hand, should definitely not be considered as one of those exceptions.
Why Chaos group have decided to stone wall on this, (giving them the benefit of doubt) is most likely because of the fact it is a new ruling, and would force software developers to restructure their practices and Eulas etc. and this has not been done as of yet. They might possibly not even know how to deal with this issue, and need some sort of corporate guideline defined first.
Of course, it could also be just plain greed
This is still country dependent if i am not mistaken. Also see my previous post that at least here in .de they cannot stop you from selling the license, but they can neither be forced to provide updated license files, serials or update your dongle if it needs to. So as long as it is a node locked license that does not help you. And they do not have to support the buyer either. So the new ruling is not solving the issue in my eyes…just bringing up more questions and gray areas 
Regards,
Thorsten