Will the Senate please ask ISPs to justify their wireless caps?

The Senate is investigating video competition during a hearing on April 24 and public interest groups are using it as an opportunity to ask tough questions on broadband caps. Such caps, which are in place on over half of the wireline broadband connections in this country, are justified by the idea that they prevent folks from overusing shared broadband networks. However, most outsiders view such caps as a way for broadband providers to protect their existing pay TV products. So as the Senate gets ready to meet, Public Knowledge, Free Press, the New America Foundation and Consumers Union sent a letter to the Senate Commerce Committee asking it to quiz ISPs about their caps. The letters essentially ask why such caps are necessary given that caps are a bad way to deal with network congestion (rate limiting during times of peak demand is a better option).

They also asked what I think of as the Comcast question:
Recently, Comcast began offering an Internet-enabled streaming service through Microsoft’s Xbox device, for customers that subscribe to both Comcast’s monthly cable television package and its monthly broadband service. This online video offering will not count against consumers’ monthly broadband data caps, even though the service is provisioned over the very same networks that Comcast claims are so prone to congestion. This development casts additional doubt on the justification for data caps. That two identically sized data streams traveling over the same infrastructure could produce such disparate outcomes for the consumer provides an indication of the true motivation for these caps: discouraging consumers from using the online video services that compete with Comcast’s monthly cable package.