As always a very insightful and thought stimulating blog- always a pleasure to read. I particularly liked the discussion about collaboration and fully agree with your formula as to why it may not happen. I would also add perhaps a factor(s) that results in limited collaboration and that is cultural competence and cultural awareness. In my view many collaborations don't work, or even get of the ground, because educational activities, innovations and strategies are transplanted into a culturally different environment, and like many mis-matched transplants are rejected. Effective collaboration involves cultural exploration, awareness and being prepared to adapt and adopt small variations that can result in major impact.
As you rightly say, effective communication is paramount, but that involves effective listening skills and recognising that many strategies will need some modification when applied to other areas of the globe