I thought this, too, but it seems carriers in the USA are being /very/ selective about where they offer the service.
For example, my inlaws live in semi-rural South Carolina and a new cell tower was built about a mile away from their home ~2 years ago. T-Mobile's Home Internet product indicates there's no service at their address for even though I have what looks to be full signal strength indoors on their "5G UC" network (indicates mid-band & mmWave from what I can tell, but in this location it's likely just mid-band). Every speed test I've executed from my T-Mobile-connected phone (Galaxy S22) is in the 600-700Mbps range and it doesn't vary based on the time of day.
Verizon Wireless indicates that they're not in the service area either for their 5G home Internet product, although I don't have data points from any UE on their network in that area.
For example, my inlaws live in semi-rural South Carolina and a new cell tower was built about a mile away from their home ~2 years ago. T-Mobile's Home Internet product indicates there's no service at their address for even though I have what looks to be full signal strength indoors on their "5G UC" network (indicates mid-band & mmWave from what I can tell, but in this location it's likely just mid-band). Every speed test I've executed from my T-Mobile-connected phone (Galaxy S22) is in the 600-700Mbps range and it doesn't vary based on the time of day.
Verizon Wireless indicates that they're not in the service area either for their 5G home Internet product, although I don't have data points from any UE on their network in that area.