You could have minimum speed and then advertised speed, because they're not the same thing. Speeds vary. It's a dynamic.
It's not like electricity that you're being charged for by volume. The electricity model you used.... Telecom providers would love nothing better than to use that kind of meter billing. They were doing that before, but now with bit competition, we are towards unlimited. You're not paying for the volume of what you're using like you do with electricity; you're paying for the size of the pipe, which is the bandwidth of your speed plan. It's a different market in that sense.