Originally posted by General G
Their unified goal was not "mass corruption," but to make themselves the new government of the galaxy, in their minds, they were doing good by getting rid of the Republic and instilling their ways. Yeah, they were trying to put themselves at the head of the government, but how does that make someone corrupt? And if it weren't for Sidious shutting down the droids, the CIS would have won.
Each of the Confederacy's Council-members joined the damn thing for self-gain. "Restoring peace and justice to the galaxy" is fine and dandy, but when such a thing is being dealt by a corrupt and evil individual, it is for self gain. Otherwise, I suppose Palpatine's actions were completely justifiable and he really wanted to help everybody and make peace. Please. He wanted to rule the galaxy because he was a megalomaniac. Not because he actually cared about the galaxy or its denizens themselves.
The CIS was identical. By ruling the galaxy, they'd make a hell of a profit than under the Republic's taxation.