said by cramer:Why? Because they don't want to run the legacy DSL network anymore. Yes, they could upgrade you 6M with the click of the mouse, but they cannot be bothered. (Even in non-uverse areas, they'd rather lose a customer than maintain the aging legacy gear.)
it's more of the back end hardware/bandwidth available. If they capped it for capacity, they typically cap it due to bandwidth available in the area.