Some dot-connecting and loud thinking:
Learnings from the F-16s have been incorporated into the JF-17, providing Pakistan with co-ownership of a 4th generation platform that is specifically tailored to meet its needs.
Similarly, the learnings from the J-31s will be utilized in the development of KAAN, granting Pakistan co-ownership of a 5th generation platform that is also customized to match its requirements.
This successful model has proven beneficial for the Pakistan Air Force (PAF), indicating their interest in co-owning a fifth-generation platform like KAAN. Consequently, it suggests that Pakistan will not be inducting J-20s or the Turkish version of KAAN, as there is no need to do so.
As a result, it is likely that the JF-17 Block-4 will be the final block of this fighter platform, as efforts and interest will shift towards the next generation platform, focusing on its induction, co-ownership, and customisation.
The F-16 program will also see a cap with no further induction as additional resources will be injected into J-10s. Together with the JF-17, these aircraft will continue to serve as the backbone of Pakistan's air force.
By 2040, it is expected that Pakistan will operate four layers of jets, including the JF-17s, J-10s, J-31s, and KAAN, without any American or Western platforms in their service. By denying F-16s to PAF, USA has lost a valuable operator in South Asia. Perhaps they have found a new operator in India, and they are content with this arrangement.