Here is version 1.1 of the diagram with an addition to include services that are compulsory. That part will always require further explanation as it can involve some ethical issues by itself - hence the illustrated "attraction".
Thanks to m8rt and beantin for feedback!
On twitter.com ♻️ 6 Retweets❤️ 11 Favorites2019 Mar 24Mood +6 🙂