We’ve considered many different licensing models, and we may very well go in any of the directions you propose. Ultimately though, the decision will be a pragmatic one. I.e. what’s the best way to put food on the table. It’s a difficult decision since most open source projects are spear-headed by people who are independently wealthy, or in the employ of an independently wealthy corporation. That’s not to say it can’t be done, but it is certainly a calculated risk for a group whose sole asset is a single product.

Of course, as you said, there must be some differentiating factor between commercially available components/frameworks, and their open-source counterparts.