Wouldn't it also be an incentive for war if a country is a) mostly independent because it produces a lot of technology domestically b) the next-in-line for supplying the tech to the world if the current main supplier disappears?
No, my assumption is that a war would leave Taiwan scorched and useless to anyone.
"a) mostly independent because it produces a lot of technology domestically" would ensure that China doesn't suffer from the lack of availability due to this destruction, and "b) the next-in-line for supplying the tech to the world if the current main supplier disappears" would ensure China profits.
That assumes these two assumptions are actually true.
Isn't China in exactly that position?