Politicians and civil servants are subject to behavioral concerns too. Who will watch the watchmen?
If this were possible, there would be no authority
Case closed. Pay your taxes, citizen. Thank you; drive through.
And then, occasionally, there are protests in the streets, people start running for office pledging to fix the abuses, we vote for them, and things slowly start to change.
Alternately, sometimes we sue them, or else a state or federal attorney general sues them; the matter ends up in the judicial system, and the behavior is reviewed by an independent judge – albeit only for violations of law, not of sense.
As avenues for redress, both of these are highly imperfect, with well-known limits and failure cases; but they’re not nothing.
In a small government scenario, who watches those providing services?