I don't think so. BSD business models: * Services: training, consultancy, ... and MOST important: * Closed source "PRO" versions. This has a number of decli

I don't think so. BSD business models: * Services: training, consultancy, ... and MOST important: * Closed source "PRO" versions. This has a number of declinations. For instance only add "enterprise" features in the closed source fork, or alternatively develop an important feature for the closed source fork and release it for the open source one after N months, and so forth. A plugin system can also work: develop a number of closed source plugins about features that are not so general to enter in the real release but that many people think they absolutely need, and sell this plugins. Note that here you are not undervaluing the open source fork as this are stuff that anyway you don't think are so general to be included.