The idea that the US protects Taiwan from a possible Chinese invasion over chips is one of those things that sounds believable but really isn't going to happen. From China’s perspective, the cost of war is much higher than the cost of developing these chips themselves. In the worst-case scenario, they would be 2-3 years behind the cutting edge, which is not mission-critical. Most electronics (civilian or military) do…
Therefore I assume that it's possible that Taiwan will simply choose to integrate with mainland China. This would be a huge change in their sentiments for sure, but these things may happen when large wheels are turning.