Experience matters, Verizon is the problem
Post AT&T break-up, they run most of the legacy copper network on the east coast. Over the past several years, they have let the system degrade to the point where failures are more common. I have a client in Florida that was a customer for over 20 years. Services were for 2 POTS lines for fire / burglar alarm and a T1 for additional voice and internet. Internet and phone outages became a regular occurrence. Then the price for services started increasing. I got brought in to sort things out because the cost of services had ballooned, and frequent outages were costing them business.
When Verizon has a problem with maintaining a circuit and decides they don't want that business, they will increase the cost of services "to get the customer's attention." In that case, that monthly bill was 2x what it was before. To get the bill back to "normal", they require you cancel all legacy services. We brought in more modern connectivity and after new services were established, we still needed the two 2 POTS lines for the alarm systems.
After deactivating the old account, we were told POTS lines are no longer available. That's right, the local bell will no longer sell or service a regular phone line. Yes, fiber or wireless is better it almost every way, but I think Verizon's approach to this problem is a shitty way to do business. I can only guess how many of those FAA sites have poor connectivity because of Verizon's failure to maintain the legacy phone network. Alaska and Starlink makes complete sense. If the FAA is resorting to using a Starlink dish in Atlantic City, New Jersey that tells you a lot about how good Verizon's network and services are.