I can think of a number of viable business models. It has a strong following without any marketing, and surrounding industries rely on tech for radio controlled clocks etc.
Private industry could easily profitably operate it, however the core technology - the atomic cloc - is nuclear weapon grade technology, which is simply unavailable to anyone but the government.
Private industry could easily profitably operate it, however the core technology - the atomic cloc - is nuclear weapon grade technology, which is simply unavailable to anyone but the government.