A mesh network, or any network for that matter, is of no use unless you have services. Having a large mesh network would be similar to having a large number of routers connected with cat5e cables or having your home router connected to your Internet Service Provider's modem and then not connecting any computers, printers, video streaming encoders, or home automation devices to it.
On a Broadband-Hamnet/ARDEN mesh network there are a lot of devices (services) that can be added in order to make having the mesh network worthwhile. There are also several devices that you can connect to your home or business network that you can NOT connect to a Broadband-Hamnet/ARDEN mesh network. After all, a Broadband-hamnet/AREDN network uses Amateur Radio (HAM) radio frequencies and therefore must comply with FCC rules, Part 97.
But for now, let's not concentrate on what you can't do on a Broadband-Hamnet/AREDN mesh network and look at some of the things you can do.