So what you’re saying is the AAM-3 project that started before the AIM-9M was even a thing and was completely independent from the US is “like the F-2 to the F-16”?
Even the F-2 is nowhere near an imitation of the F-16, it shares only about 5% commonality and effectively resulted in a new aircaft completely. This is why the cost was similar (even lower on a per-unit basis) to the projected cost of the domestic FS-X. So even if AAM-3 was like F-2 it wouldn’t be as you are describing.
Please don’t start this again…
There is no hard limitation on guided weapons, only soft political factors making it difficult to support procurement of any new weapon type. Japan also ordered JASSM for their F-15JSI as another example, this time on a combat aircraft of the JASDF.
It has nothing to do with them being incapable of using these weapons.
It seems I was half asleep, because the 1,051st post I made has disappeared(or maybe it was deleted). For the AAM‑3, please refer to page 174 of the TRDI 50th Book. It is publicly available. The relevant page is included in that TRDI50_07.pdf. https://dl.ndl.go.jp/pid/1283286/1/1