TSMC is Taiwanese, China will takeover Taiwan in the next 5-10 years, and Intel's manufacturing processes are ancient. The future when US/EU can't produce our own chips is rapidly approaching.
TSMC is building new plant in the US and elsewhere outside of Taiwan.
There's no guarantee that Chine will "takeover" Taiwan any time soon, the geo-politics of that are way more enormous than just chip manufacture.
Most of the development in manufacturing of chips is by the companies that supply the fab developers, the integration of those skills and components is where the different fab owners have their competitive advantages.
The "future when the US/EU can't produce our own chips" was also in the 80s when there was a push to develop memory manufacturers and back then, Japan was the evil empire that needed to be stopped.
TSMC would continue post a China takeover of Taiwan.
And... What do ARM or NVIDIA have anything to do with fabrication? If anything a merger will hurt Intel and make it harder for them to update their processes.
