RAD own the IP completely so they can dual-license GPL and Commercial.<p>No non-Free commercial product or game would touch the GPL version so license revenues would continue.<p>RAD-tech could then be used in Free software too, gaining publicity, adoption and developer mind-share.<p>If innovation comes downstream in the Free version then RAD could license that from the coders for their commercial product. The good will from their initial gift of Freeing their tech may make upstream patch re-licensing on good terms.<p>The social benefits of dual licensing should be encouraged by a GPL tax-relief akin to charitable write-downs.