'Under anarchy, uncoordinated competitive theft by "roving bandits" destroys the incentive to invest and produce, leaving little for either the population or the bandits. Both can be better off if a bandit sets himself up as a dictator-a "stationary bandit" who monopolizes and
rationalizes theft in the form of taxes. A secure autocrat has an encompassing interest in his domain
that leads him to provide a peaceful order and other public goods...'
Olson, 'Dictatorship, Democracy and Development', APSR 1993.