The main reason why Pakistan didn't acquire Any large twin engine jets is the geography of Pakistan
We are a very narrow country with Indian air based dotted not far from our borders, all along
the border.
A large scale Indian air force attack involving 300+ jets and a wholly of Cruise missiles will be unstoppable and all Pakistani air bases will be bombed within 20 minutes of the assault.
Practically putting PAF out of action.
Then PAF will have to use highways as runways and large jets are not suitable for that.
We are a very narrow country with Indian air based dotted not far from our borders, all along
the border.
A large scale Indian air force attack involving 300+ jets and a wholly of Cruise missiles will be unstoppable and all Pakistani air bases will be bombed within 20 minutes of the assault.
Practically putting PAF out of action.
Then PAF will have to use highways as runways and large jets are not suitable for that.