I am glad you found my idea of some interest. MySQL is one of the few open source products deployed in a myriad of different “stacks”, resulting in one of the biggest super-communities around.
Is this a tribe? Probably not, nevertheless I think that you just need experienced professionals willing to share their knowledge of the product and of its (commercial) “complements”.
I am not thinking of selling proprietary add-ons, but there is a lot of dispersed knowledge that can be gathered, organized and sold for a fee. Funnel marketing is just about addressing business opportunities different from subscriptions or double-licensing.