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Apple to Buy TSMC's Entire Supply of 3nm Chips for 2023
(www.macrumors.com)
This is a most excellent place for technology news and articles.
The issue is that the US doesn’t own all of the relevant patents, just most of them. It’s hard to apply US anti-monopoly laws against a company based in the Netherlands that primarily sells its products to Korea and Taiwan. All the US can do is threaten to pull the EUV-LLC patents that the department of energy developed.