True, a simple group chat is enough. But imagine, you buy a box, you plug it in, configure it via browser and you can admin multiple groups via your own private relay. Sovereign. 

I worked for a network of schools. Coordinated multiple classes within the same location, all within an international network. If each school had its own relay, with some data being automatically propagated through the network (global or area), while other only remaining available to local (school relay) or group (class) most of the headaches I encountered would have managed themselves. If one school fucks it up by mismanaging their relay, they can recover from the network. We had students moving from one location to another and whole sorts of data portability problems. 

Fuck, I should go back to pitch it to them even though they’re cunts. They attract interesting students, and do teach programming as well.