Even Taiwanese can sustain 300+ Jets at long term.Korean is 400+
en.wikipedia.org
In korean and japanese case they had much expensive F-15s
Bro Taiwan has China as an immediate danger threat, with more than 1000+ fighter planes as opponents. They generate their income from the chip industry, especially through TSMC.
USA gives them very high discounts, and help them underhand with maintenance & support, almost the whole electronics world is produced there chip wise.
If Taiwan falls to China, the entire chip industry in the USA & the world will fall into China's hands.
South Korea's opponent is North Korea, which, together with China, also has nuclear weapons. In contrast to Russia, which has the good sense not to use these weapons even in times of war.
North Korea has no inhibitions about using them as a first strike if it were to attack South Korea.
Even the Russians have the fear of God and morals, which the Chinese and North Koreans do not have.
For them, a human life is worth nothing, you only have to see how they treat their own people and now transfer this to foreign people, God save the country that would be attacked by the two countries, the previous war criminals in the world would look more like a joke then.
The location of Turkey with Greece, Russia & Iran as opponents is a joke in comparison.
Iran & Russia dare not attack a NATO country, it would be their death sentence.
That leaves only Greece....and they simply don't have the capacity to keep up in the long term.
The USA won't sponsor them indefinitely just because they get anxiety attacks