Why shouldn't they get 6 MHz? My PBS station broadcasts 4 subchannels: the main PBS channel, PBS Kids, a channel with programming about our local region (which airs live coverage of our state legislature when it's in session), and a loop of weather information with audio from the local NOAA Weather Radio broadcast. Those are all useful public services. PBS Kids in particular I think has a very good reason to exist, considering the absolute wasteland that is young children's media on streaming.

ESPN, however, demands that they get the full 6 MHz.