I think I might understand your concern now. If you mean dual-licensing business models that follow the poorly named "open core" model and sell an extended proprietary version, then I agree with you; that seems just as problematic as selling proprietary software in the first place. On the other hand, I don't see anything wrong with selling permissively licensed versions of the same code as a revenue model.
I'd still rather see this as an optional addition to the license, though, rather than a required provision.
Posted Feb 15, 2013 21:19 UTC (Fri) by ballombe (subscriber, #9523)
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To sell permissively licensed versions of the same code require you to be the sole copyright holder. So either you require copyright assignment or you refuse all external contributions, both alternatives being antisocial.
FOSDEM: Richard Fontana on copyleft-next
Posted Feb 17, 2013 12:31 UTC (Sun) by jrn (subscriber, #64214)
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Or that you get a license agreement from contributors explicitly allowing you to sell permissively licensed versions of the same code.