While Dionysios wants Plato's approval, he makes only half-hearted efforts to reform either his own luxurious lifestyle or the Syracusan government. Part of this is due to his own nature, but other factors also inhibit reform, such as Syracuse's large and oppressive mercenary force, who are necessary to counter Carthaginian aggression, and the Syracusan people themselves, who have become politically enfeebled under Dionysios the Elder's long rule. Dion is eventually exiled due to the machinations of his rival Philistos, a loyal but corrupt supporter of Dionysios.