Conceivably, code to do just this could be easily implemented on a Comcast-made and owned modem/router combo since they would control all aspects of its operation and there is no customer equipment between it and the Internet. The code already exists for them to do just this, they just have to have the will to implement it.

Maybe eventually give a discount if you let them monitor you.. or the company gets paid by the government to spy on you as a separate revenue stream, you pay the service and they also get paid to conduct surveillance? Surveillance-as-a-Service?

Insurance companies would love this capability.