I thought the whole superstation concept went away because local channels fought that, so stations like WPIX would no longer be brought in. When I lived in AZ, we had WTBS out of Atlanta, WGN out of Chicago, and WOR out of NY. When the Superstations went away, both WTBS and WGN mophed into basic cable channels nationally, and WOR went away.WPIX is offered on some cable packages across the US and CA. Back in the 80’s/90’s is was marketed as a nationwide “superstation”.
I suspect now it’s NYC roots keep it of interest to many.