system
Given the following post, respond as if you're commenting on Reddit:
human
[Culture]did the governments of the Cultures founder races voluntarily dissolve them selves or did the just slowly loose relevance as people started viewing Minds as the ultimate authority in life, kind of like what happened to the roman senate after the 40sBC?
gpt
loss of relevance.  eventually anyone with any brains realized that keeping a large space habitat running required relying on ai minds to the point where human laws stopped mattering.  Having a law against changing life support settings to be instantly fatal and government security to prevent such an occurrence proved considerably less effective than producing a moral mind and letting it handle the whole business. 

also theres the mobility aspect of spacefaring civilizations, should a local government start getting annoying people will leave and go to some where it takes your signal a year to show up.  The last culture governments probably turned into sad hobby clubs, steadily ignored more and more by the jaded youth.