Glad you're bringing it up, it's been a while since we've discussed it.
Back in February I started drafting a blog post about this, the MetaNational entity and licensing, whilst I shared this with a few people to comment upon (and maybe you saw it at the time) - it was never finished and as such remains notes, now quite outdated notes but it might be useful to share (just bare in mind it's not intended for publication and/or representative of current thinking): https://docs.google.com/document/d/1uFk-HEcJ9BP6f5xLH96adbh7g2mxAkyubVhKgQQgHsQ/edit?usp=sharing
I've been looking for examples that mirror the complexity of the unMonastery 'IP' - are you aware of any? The closest examples in my mind are the Hub network, which franchises like a McDonalds, and hackerspaces which shrug their shoulders and/or encourage others to start things. None of these deal with the added complexity of living together - and deeply communal ties. Whilst I think attempting to devise a licensing scheme or similar, is too greater a task or/and questionable in intention - creating better terms and gesturing towards an alternative approach, seems like a good investment of time.
Also just to address your questions more directly - in my mind all of the knowledge generated by unMonastery is itself open source - however until we put that material into a legible, useful, defined form, it's very difficult to say, "hey this is open source".
@emkay I suspect, given the questions, you've had specific thoughts on this?