content: The grounds are probably that the FCC does not have the authority to force them to comply with specific regulations for whatever reasons they can come up with.  Among other things, it may be cost prohibitive, cause infrastructural problems, and would force the cable companies to provide an inferior experience. Mind you I think that those excuses are a load  of horse shit, but that's the kind of grounds they come up with, and then they have their lawyers write several-hundred-page filings detailing each one in as much excruciating detail as possible to try to make it stick.