Are cable companies required to provide HDMI cable for HD TV hook up to set top box?
They didn't with mine. Go to the Dollar General, they have them real cheap there, and reports say there's no difference between the cheap ones and expensive ones.
some will but not without specifically asking but no it is not required as very few laws apply to cable companies
Most of them do, mine did. If you never got one you can always go to radio shack/dollar general to get one cheap.