China competitor now is also invest hugely in chip technology. Soon ASML is about to release next generation EUV Lithography, TSMC will make breakthrough with 1nm, and Intel effort to close the gap with TSMC (Intel has no issue with euv litography like SMIC), following this scenario Intel will achieve parity with TSMC sooner than SMIC.
Although China can play with her huge market like requiring Samsung/Apple to use chinese chip & OS if they want to sell in Chinese market, but this will thwart China as being a leader in digital technology.
It is urgent for China to take another different route, with photonic Chip. I wish Huawei could materialize the application of this photonic with their next high end chip and high end products.
Investing into new technologies as alternatives makes sense of course, but pursuing domestic EUVL is more likely to be the most realistic way of closing the gap in technology.
A gap in technology is not a huge issue itself, so long as gaps in technology can be closed with time.
If the US chooses to wholesale block semiconductors of specific nodes to Chinese companies, that's just something that Chinese companies will have to accept --- it means that those companies will have to temporarily exit the market of the most advanced products until domestic semiconductor foundries catch up.
I think it is worth keeping in mind that this is best seen as a war. A war is made up of campaigns, which are in turn made up of battles.
The war itself is one of semiconductor and fundamental technology self sufficiency.
The campaigns of this war include the advancement of various foundational industries that make up technological self sufficiency, and other campaigns include the survival and success of various key relevant industries and players and subsupplier domains. There are certain battles as well, including the success of specific
companies in given industries/domains -- but it is important to consider that one can still win the war in the long term even if multiple battles are lost.
The question is a pretty simple one -- how long will it take for China to close the technology gap, and will it be sufficient to achieve the win conditions for the technological war in the context of national geopolitical competition?
I think it is still an open question.
I also think we have to realize that there may be multiple sacrifices and losses in the war, but if victory can be achieved then the long term rewards could be substantial.