Strategy Page on why the US will not export Predators to Pakistan:
The U.S. doesn’t want Pakistan to have Predator/Hellfire partly to keep the technology away from China, partly to keep the systems from being used to kill tribal leaders the U.S. does not consider hostile. The U.S. also fears Pakistan would use Predators against India. Above all, these UAVs are in big demand by American and NATO forces, who have priority.
The Pakistanis are also prone to corruption, and giving them missile armed Predators would encourage Taliban and tribal leaders to offer money, or cooperation, to avoid a Hellfire missile. You can’t bribe the Americans, which is what really annoys many Pakistanis. What also annoys Pakistanis is the Americans constantly pointing out that Islamic terrorists are killing far more Pakistanis than the Indian armed forces, and the two countries have not fought a war for over 30 years. Yet Pakistan still keeps most of its security forces aimed at India, while India pays more attention to the Chinese threat.
Wouldn’t want anybody to get annoyed…