Comment Re:Capitalism, ho! (Score 4, Informative) 107
I don't have the FCC's spectrum allocation chart handy, but here's the one for Australia: http://www.acma.gov.au/webwr/radcomm/frequency_planning/spectrum_plan/arsp-wc.pdf
The only unallocated spectrum is below 9kHz and above 275GHz. Obviously a lot of overlap can occur at VHF and above (if you allow for the odd tropospheric ducting event to cause interference) but TV is the last of the big chunks of spectrum, everything on the chart that isn't broadcasting (orange/red colour) is hacked up into small pieces.