5G isn’t just about phones. It’s about IoT and all sorts of mobile (and non mobile) devices. Having the ability to transmit more bandwidth albeit at a smaller distance is a big deal. Edge computing helps on the latency front which is also a big deal, information needs to travel less of a distance than being routed over the internet (the laws of physics, particularly the speed of light is the constraint here). In the communication world I’m not sure what could be more important than bandwidth and latency.