Doesn't get better latency currently; theoretically, it can cut latency to single-digit milliseconds to the edge.

It's not a desert, there's mm wave all over DTJC, it just doesn't look like it on the map because the range is so limited around tall buildings.

I mean, streaming bidirectional AR content running on edge servers would be a good mobile use case that would probably need that sort of latency and bandwidth eventually in a mobile environment.

Useful for much right now other than general speed and responsiveness? Probably not. But you don't build new network infrastructure for today's needs, you do it for tomorrow's.

Probably more of a good idea for suburban environments to prevent them from having to wire fiber to each house. Running a fiber cable to a dense 400-unit building is a lot more cost-effective.

That said, there have been millimeter-wave high-speed point-to-point internet services at commercial buildings in NY and Chicago for years. Just need to put the antenna on a tall building and point it at other buildings.

Getting a 2-gigabit connection on the streets of dense urban areas and in large stadiums and arenas is useful.

JC was one of the first, which is why we got millimeter wave coverage, which is super fast but doesn't go through buildings. Look at a lot of the DTJC streets, for instance.

Later phases use mid-band spectrum, which isn't quite as fast but has much more range.