So they stay in power, because they know all the trash on government and army officials like who is sleeping with who and who killed who, and so there are people who will protect these guys?
And he's a muslim teacher how...?
He is not "in power", but he is empowered by the military establishment and people like the Chaudhries of Gujrat and even Nawaz Sharif at one time. They can implicate the "farishtay" within the GHQ and agencies who were giving the "secret" assistance for the state's jihad campaigns overseas.
He gets his money from Saudi Arabia because he represents the Pakistani version of what is called "Wahhabi" or Salafi tradition. Most of the money goes for good work, but some ends up in the pocket and some ends up for "jihad", like the one we see daily nowadays.
If you pressure him too much, he will not go quietly and will implicate everyone from Zia to Musharraf in all the dealings.
What we are paying for in daily suicide attacks is years of investment in private armies to conduct our wars with India and its allies.