So just clarifying, you don’t want people selling Child Themes for the framework?
I’m totally fine with that and think that would be great, but that’s not what Martin was asking. He was asking if he could literally copy the Jump Start theme and just start editing it and then selling it has is own work on a marketplace like ThemeForest.
If you want to create a Child theme for Jump Start, and sell it, someone at ThemeForest told me that they might even consider allowing people to post them in the “Frameworks” category. Not totally sure on that yet, though.