The Director of Project Freelancer in Red vs. Blue summed up his philosophy with this line: "When faced with the extermination of our species, any alternative is acceptable." This led to him performing highly unethical and illegal research on fusing Artificial Intelligences with elite human operatives, which ended in plenty of deaths and more than a couple of breakdowns of sanity (for both humans and AIs). It's mentioned that entire sections of ethics law regarding AIs were added and rewritten once the full extent of what he had done was revealed.
Duncan, from Arby 'n' the Chief, simply wanted to remove game police. If he had to ban other people, so be it. To be fair, he at least refused to participate in Clyde's plan to bring down the network.