Do me a quick favor: take out any screen+WiFi device, and look at your WiFi available connection list (usually the upward quarter-pie of circles or "waves" icon in the menu you can drag down from the top of your screen). Look at the top of the list, with the biggest-strongest "signal" indicators but locks next to them. Imagine you could share your WiFi lock keys with each other, and get free signal as you pass by your neighbors, in return for them getting signal when they pass by yours. Imagine extending all these signals by miles with existing technologies like MU-MIMO Super-WiFi, MegaMIMO, WRAN, and LoRaWAN. Would you ever really need 5G?
Delete Your Internet Bills
Now look at the weaker signals near the bottom of the list. Some of them are on opposite sides of wherever you're holding your device right now, so you can barely see them but they can't really see each other. Imagine you could all agree to "relay" each other's signals, where anyone who couldn't connect to each other directly can "hop" via neighbors who can see them both. Extend that -- any town, city, province, county, State, continent, island, or cluster can become one big system of relays. That could be The Internet -- we don't need these monopolist Telcos or Cable hoarders at all! This can all be done with current technologies, but near future ones will make it even easier. We could even use high altitude blimps and drones to have our own neighborly sky-nets, and also share renewable power and condensed water over similar neighborhood conduit networks, but more on all that later...
Another quick favor: count all the people you would trust to watch your precious things, pets, plants, etc. while you are away. Not that they're always available, just that you would trust them if they were. Top of the dome only! If you take too long to think of them they don't count for this. Then think about how not everyone on their lists are already on yours, meaning you all have a collectively much longer collective trust list. *This is called "small world network phenomenon" on your personal "web of trust". Past studies (look up those quoted terms, along with "Dunbar's Number") show that you can cover almost the whole world with these human-trust networks via just a handful (3-8) of "hops". Some of you fellow-olds know this as the "Six Degrees of Kevin Bacon", tempting me to call these "Bacon Networks", mmm! These trust networks can replace your current Internet ID, secure communications, backup storage services, and more!