They can have privately owned schools in Pakistan which are recognized internationally.No, misleading title. But it will be expensive nonetheless, don't know how much CAA charged for commercial licenses tests.
But, I don't see any other option. CAA license tests won't be recognized anymore, and it's obvious that local private institutes would be also viewed with doubt and concern.
So it has to be outsourced, aviation is a global business and phenomena, you need the legitimacy and recognition. This is not the permanent solution though.