comcast trying to force me into buying cable

So comcast which owns both xfinity and peacock wont let xfinity customers that have peacock through their comcast subscription use a peacock add on instead of adding $65 worth of cable tv. Other third party providers can do the add on but somehow comcast can't... Gee I wonder if it has anything to do with the cable and more expensive internet packages that was constantly being sold to me. I find it hard to believe that comcast can't provide that. Also people kept misleading me about whether or not it could be done.