@benmetz Have some more time now... so lets have another crack.
You are certainly onto something here. In a very basic way, RHC 'externalizes' the costs of sourcing, DD etc of the commons expanding projects we support by trusting that our members will only be proposing worthy projects. It would be much simpler to keep a larger slice of profits by just keep them within the profit share option, then trying to game the system.
To expand upon this, into the realms and scales you are talking about requires automation. IMHO this is the primary aid.
An example of this might be:
This simple system helps to automate the process of setting up an organisation.
What blockchains theoretically can help with is the stitching together of a series of automated systems in a way that is audit-able by stakeholders (interested third parties etc).
A good example of such experiments can be found within the D-CENT project:
Quite erratic thinking here - but bounce some questions / reflections and we can keep going with the explorations...