There are some social/political/economic movements that argue for a reduction in government, often citing it as a potentially corrupt evil. Some go so far as to advocate for its utter removal and replacement with privately run institutions.
Enter Gurgaon – a quickly growing city in India which has been run solely by companies for about forty years. The result has been a very lopsided city where only some neighborhoods have facilities like running water and electricity.
Such a model could be edenic or dystopian depending on the tone and theme of your story. This could be a dark exploration of a corporate run world in a hard boiled cyberpunk story or a libertarian utopia for entrepreneurs unhindered by red tape and the strings of government corruption.