Inasmuch as the local channels are all affiliated with the big networks, (each a different one) they would not want to go against their "boss". No idea what their contracts say, but it does seem none could show whatever shows are streaming.
What surprises me........Here in America, Corday owns Days, makes his own deals for showing. So, he has a deal with NBC, and they are the ones who decided to move the show to Peacock, and streaming.
Once upon a time, I used to be able to get Canada, and networks, whether on East Coast, Central or West Coast. Loved that........but eventually, all was taken away. (lived very rural, had a huge satellite antenna, and it did not cost me anything, tho that antenna did. It was huge, and on a pole 12 ft. high. Along came the smaller roof antennas, and it all changed drastically. No more Canada, no more east or west coast, and pay thru the nose. LOL