Oh my gosh, you can come up with an imaginary situation to justify a mechanics situation?
I'm so impressed; you should pat yourself on the back! Clearly I was struggling to come up with an RP reason; obviously the issue here is that we need to protect the interests of NPCs against players. That's a major concern.
You are asking to have your government changed on the basis that the alternative (changing it yourself) conflicts with verisimilitude. I am telling you otherwise; that it is actually more justifiable for there to be conditions and consequences for a government change than for it to be done with the wave of a wand, figuratively speaking (or literally, with the click of a button), as the former more accurately represents the weight of such a decision.