Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License: Terms of Service - McNeel Forum
A lot of content and scripts posted by the users here is copy-pasted to aid in commercial environments. Surely, nobody polices this closely, but why making it illegal. It may one day backfire on those who haven’t taken time to check it.
In comparison User Content License for all Stack Exchange sites allows commercial distribution: What is the license for the content I post? - Help Center - Stack Overflow
I don’t think that the content can be now retroactively relicesed , but it would be good to at least know if there was a particular reasoning behind this decision.