It's only prioritized up till the cable modem, not after so that part doesn't matter (i.e. other providers have equal access to your home network).
And up till the cable modem it is basically using a different channel: They are increasing your allowed bandwidth to make up for the usage. To me that's indistinguishable from a dedicated RF channel.
By prioritizing network traffic and running this over their same routers someone down the street using their XBox reduces my bandwidth without being part of any cap's, that's a real problem.
And up till the cable modem it is basically using a different channel: They are increasing your allowed bandwidth to make up for the usage. To me that's indistinguishable from a dedicated RF channel.