I suspect in these first few years they’re monitoring how it’s being used, and then will use that data to decide. If the usage is so low that the cost is neglig

I suspect in these first few years they’re monitoring how it’s being used, and then will use that data to decide. If the usage is so low that the cost is negligible, they might just keep it free. Or it could spawn a regulation that this kind of service must always be free like 911 service on cellular networks.