The Village (2004)
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While there are areas which have heavily restricted flight patterns, there are almost no areas which have complete bans on overflight. These areas are almost exclusively the ones used or occupied by the President of the United States or which have national security interests.And even those areas will allow military and emergency overflights if they are required by need.
It would be virtually impossible to purchase the right for not only civilian aircraft, but also military ones to not overfly a particular region. Even if it were possible to do so, aircraft would still have to be allowed to fly NEAR such locations as not doing doing could itself create navigational hazards which could endanger them.
And finally, while restricted overflight areas DO exist, they are often subject to accidental and intentional overflights by civilian pilots. Unless there is a squadron or wing of aircraft prepared to challenge the aircraft or the facility has anti-aircraft defenses, there is no way that overflights could be prevented or even seriously discouraged.