Tom, great article. It’s such an interesting and important area.
In relation to understanding and even modelling this wider view of interconnected entities (for what purpose I am not clear yet!), I suggest checking out Tom Grave’s work at http://weblog.tetradian.com. The concepts of fractals and recursion are really powerful. He has a lot of content but maybe start here if you are interested http://weblog.tetradian.com/2016/04/25/towards-a-whole-enterprise-architecture-standard-2-core/