Great topic!
I read in an interview: "How do you expect Pakistan to be free of corruption when its entire political culture is based on rishwat and nepotism."
Corruption is nasty, stinky, goo that seeps out of many little orifices of Pak Government (and every other government in the world). There is no argument that corruption hurts us, and hurts us badly.
However too much focus on corruption is counter productive. You see every living being consumes food, and a portion of that food is excreted as waste. Corruption is kind of like that waste.
If you forcibly stop the excretion of any living being, the organism will die quickly. The same way, if you try to bring down corruption below certain level, the country will die as well.
Pakistan is a very large, nay a HUGE country of 160 million people. If you consider the example of living organism, Pakistan is very large organism. When we look at the excretion or waste or corruption in Pakistan, we must look at the net inflow of food, or income, or budget of Pakistan.
Right now Pakistan spends $30 billion every year on its population of 160 million. If by some magic, we reduce the corruption to $0, even then $30 billion for such a large country are like a tiny bowl of peanuts for a 7 foot tall basket ball player.
If such a player doesn't show good performance, we can't continue blaming him that he didn't "consume" every bit of the small bowl of peanuts as he excretes a portion of the peanuts.
We must increase the intake of the basket ball player to international standards. A small bowl of peanuts may have a couple of hundred calories. But a good basket player needs 2500 to 5000 calories every day. Out of all these calories, it is possible that 100 or so calories may go the "waste".
Similarly a large country like Pakistan needs $200 to $500 billion a year minimum to function properly. Out of this budget, it is possible that $10 billion or so may go to waste or corruption, but the country will continue functioning properly.
Thus our energies should not be focused solely on reducing waste, but we must try to figure out a way to increase our national income to $500 billion a year.