In the early days of cable internet, the first people in a neighborhood would get it and rave about how amazingly fast it was. Then a 2nd subscriber would get it and their down/upload speeds would drop by half when both tried to use it at once, then 3, 4, 10, 100 people would start sharing the same bandwidth and the clueless cable TV company employees would just tapdance without really fixing anything - which would require corporate to approve expensive upgrades to their backend.

Around here lately 5G based internet seems to be the same - they're trying a little harder, making fixed location subscribers declare where they are and charging mobile users much more, but it's inevitable: if you've got 100 homes all trying to use one tower at the same time, it's not going to go smoothly.