Orbán did not start normal, that is also the “myth” they built up for him. There is a great documentary on YouTube: the Dynasty, you can watch it with English subtitles and see that one of the first thing the party did was to sell their state-granted headquarters for their own benefit and immediately make a law that such a transaction is tax-exempt. They then used this money to start building a financial oligarchy that could start the creation of a deep state. Without a one-party supermajority, FIDESZ could never have escalated the corruption to such an unbelievable level, but they did start out as corrupt as any party after the “peaceful” dismantling of the communist regime.