CharlieSmall, yes there aren’t enough radio broadcast stations. WQXR almost went out of business because its former owner decided it wasn’t making enough money; had it not been for the existence of “public radio” New York would today have no classical music radio station. The terrible thing about WQXR is that it was actually making money, just not enough, and it isn’t as good a station today.
Regarding the alleged unconstitutionality of arts funding: The government has funded the Smithsonian museums for over 160 years. Nobody seems to have questioned it until today. And the total amount of arts funding barely amounts to roundoff error in the total federal budget.