BEIJING :China, the world's top processor of rare earths, banned the export of technology to extract and separate the critical materials on Thursday, the country's latest step to protect its dominance over several strategic metals.Rare earths are a group of 17 metals used to make magnets that turn power into
Same response as https://programming.dev/comment/5908167 ; I never wrote that China cannot create it's own version, but that it will likely take some time. Reasons for this complexity are also mentioned in that post.
I get where your impression comes from, but I highly recommend watching the video about EUV's history (https://www.youtube.com/watch?v=RmgkV83OhHA) to better weight the contribution of every (international) party.