If we had committed to the platform early on in 2011, we would be receiving them just about now. That's where strategic planning comes in.
PAF is excellent but it suffers from 'reactionary planning syndrome'. The PAF lacks a robust strategic thought culture. That is why their planning always reflects reaction not pre-emption.
They've committed a bunch of money to J-10C because they failed to forsee a proper role for JF-17 which ideally should've been planned as a medium class fighter like the F-16 or J-10s, way back in 1997. Now that they have committed to the J-10 instead of investing in an above the horizon next generation platform 10 years ago, they'll have to invest in NGFA all over again. In other words the PAF for the next 30 years will continue to suffer the logistical nightmare of managing 4 different platforms with just as many suppliers.