I can offer another angle to "why"The problem is perrineal and long standing. No one is willing to spend money to acquire a special steel plant which would be the basis of creating the alloys needed to create engines. Then we start small and manufacturing motor bike and car-engines to Turbines. That will open doors for other technologies which will result in the AC engine that we want. The real question has always been whether the means justify the end, ie the specialized alloys plant and research into metallurgy equates to engine production. I dont know if anyone has done the maths but-would love to know the logic behind and the sheer investment required to produce the end result. Even if we could do sim0le turbines for power generation it would have been helpful but compared to India we are starting 20 years behind. Then what is the need and what is the-demand.
Lastly Turkey and collaboration with is a very plausible solution as we are more or less at a stage to be able to share technological-advances but for us-the finances remain a problem.
Probably, the Pakistani youth are increasingly concerned about Pakistan's ties with China (re: Uyghurs). You notice that our own leadership is silent about the matter -- i.e., they can't even support the Chinese, nor can they deny them in public (for obvious reasons).
However, if the post-9/11 situation has shown us, if we do not "straighten the line," we risk confusing massive swaths of our population and, in turn, leave them open to TTP/AQ-like influences (because they fill the void).
OTOH, a Pakistan that can stand on its own two feet in terms of economy and military technology can say and (up to an extent) do whatever it wants.
The argument I'm making is ... our internal stability and internal cohesion may, at some level, be contingent on the strength of our economy and domestic industry.
Turkey understood this for its own people (who are super proud and split between Europe and Islam, basically), so it said, "we'll carve our own unique path and be our own power so that we can say and do what our people want us to do."
Pakistan will need to do something similar, and I think we'll need to double down on AZM et. al.
Obviously, we can't do jack if we don't implement a real economic development policy, but that's actually quite easy if you put the right people in charge (which is actually the hard part for us).