Ditch AM, FM, DAB and DAB+. And analogue TV (we're still doing NOTHING with those frequencies, right?)
Allocate the frequencies to 3G/4G/5G.
Yea, right. During the Black Saturday bush fires in Victoria Australia the 3G/4G/5G was the first communication infrastructure to fail. At least with old style AM you have the geographic coverage from a single transmitter without the requirements for repeaters.