No one really "rules" Pakistan. Army and some other govt entities try to manage things, but overall its a lawless territory.
The social and geographical fabric of Pakistan is however infested with gangs. These gangs really dont let anyone to "rule" this country.
These gangs are continuously looting Pakistanis. Water mafia, electricity mafia, medicine mafia, money laundrers, security mafia, procurement mafia, city and district management mafias, law and order mafia... And the list goes on and on..