Dual of denial – on the success and failure of dual licensing
There’s been a fair amount of attention – both positive and negative – on dual licensing in recent weeks. A few days ago Brian Aker wrote: “The fact is, there are few, and growing fewer, opportunities to make money on dual licensing.”
It is a sweeping statement, but one that is worth further consideration, especially since, as Stephen O’Grady noted it is directly contradicted by Gartner’s prediction that: “By 2012, at least 70% of the revenue from commercial OSS will come from vendor-centric projects with dual-license business models.”
Success?
I remember reading this prediction back in December but dismissing it as being based on a fundamental error – the assumption that dual licensing and open source licensing are “essentially the same thing”. As Stephen argues, and we have previously clarified, they are not the same thing at all.
Dual licensing is the practice of selling exceptions to use an open source code base using a commercial license, while open core licensing is the practice of selling extensions to an open source code base. One of them is considered acceptable by Richard Stallman, and one isn’t.
The Gartner prediction is further flawed.
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