Well they do kinda, in the context that Geoff asked the question, yes it should be allowed to happen
https://www.faa.gov/about/office_org...tain%20towers.
They also do it very similarly in the UK. I think the important thing to note is the funding for it comes from airport. If Ballina airport/industry wants to fund a tower why can't it be privately operated under contract to Airservices?