Are you saying broadband access and HF radiation must necessarily go
together? If so, why?

As a commodity, the HF spectrum can be more greatly exploited for profit as

a means of delivering data bandwidth than as a means of mass communication
or 2-way comms. Broadcasting via terrestrial MW/HF/VHF/UHF transmission
can be virtually replaced by broadband/digital, cell or satellite
technology anyway. Broadcasters look forward to the day when they can
mothball their multi-kilowatt transmitter sites and the engineers they pay
to keep them running. Imagine the savings in electricity alone!
I have a buddy who, thru his Sprint wireless internet connection, can
listen to RealAudio sites from his laptop while driving in his car. It's
just a matter of time!
Pete
KQ5I