That's a very pessimistic take, or optimistic I guess, depending on perspective.
Looking at the Chinese semiconductor development trajectory, and considering that TSMC won't be sitting on their hands, "within a decade" seems really unlikely.
I am aware, I live in Taiwan. While TSMC engineers can be poached "move between countries freely" is not true because moving from China to Taiwan is not so easy.
The key word you mention is "replicating." They'll be chasing for a while still, and it's not clear that they'll be able to leap ahead. Copying is much easier than real innovation.
Looking at the Chinese semiconductor development trajectory, and considering that TSMC won't be sitting on their hands, "within a decade" seems really unlikely.