[NorseViking]

Israel did it. India did it. Even Pakistan did it. Why can’t Turkey do it with its better industrial base and expertise?

[FtrPilot]

The Israel Lavi indigenous fighter jet cost $1.5 billion. 3 prototype aircraft were built. The program was then cancelled. Hardly a success story.

India's first indigenous fighter jet (Tejas) took 30 years to develop. It is 4th generation and is not nearly as capable as the F-35.

The JF-17 Thunder was jointly developed by the Pakistan Aeronautical Complex and the Chengdu Aircraft Corporation of China. It is a 4th generation aircraft.

Turkey could try, but there is no way they could develop a 5th generation aircraft.