A nation state like China is developed enough that it doesn’t care about millions or even billions for something as strategic as this. They’re looking to potentially invade Taiwan to take over TSMC to get their hands on bleeding edge tech which is going to be significant more difficult and expensive.
Companies know this and a) intentionally make the parents vague (also helps with enforcement) and b) keep a huge amount back as trade secrets. That’s why you have industrial espionage.
Sounds simple, costs millions.