Because I do not find it credible that the GM will organize a rebel group and have a rebellion against himself.
I find it more credible that a second GM might, especially if each GM was assigned different objectives.
If Tom forbids rebellions amongst the Zuma, then there will be none, however many GMs there are.
If Tom decides that there should be a rebellion amongst the Zuma, there will be one, however few GMs there are.
Do you really think that the GMs are free to just do whatever the hell they want?
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