[zanny]

You are describing the costs of total network capacity. The poster above is describing marginal costs of bandwidth.

If there is infrastructure in place that is going underutilized and I want to download a megabyte of data, the marginal cost of that data transfer is incredibly negligible. But that infrastructure exists to meet the conditions of peak utilization, when at capacity, and that is what is expensive.

If anything, Sprint should give flat rate mobile data and have fixed funding campaigns to increase capacity for each residential block around a tower. If the speeds are too slow end users would then pay to upgrade the infrastructure themselves, or more specifically heavy and business users would subsidize network upgrades.