This article on the BusinessWeek website is a re-statement of the concerns around network neutrality (see this earlier post on this, and this one as well). Link Hoewing's remarks in this article cause me to wonder whether the incumbents' differential pricing strategy is a way to compensate for the regulatory asymmetry that is currently benefitting VoIP providers.
Update: Please check out Ray Gifford's analysis of network neutrality. I found it interesting and useful in that it was based on economic analysis than on historical, moral, or other imperatives.
Network Neutrality, Internet, Telecommunications