I subscribe to Alaska Power and Telephone’s Internet service at the 1 MB rate with a maximum data transfer of 30 gigabytes. It’s expensive, and if I exceed 30 GB/month I pay a penalty. When my service is slow, which happens every so often, I call their technicians. They’re always friendly, but I’m offered the same explanation every time: My slow speed is due to too much line traffic down south. If that’s the case,…