China's GDP is projected to surpass the US GDP in 2026 [1]. After that it won't be long until the Chinese defense spending will surpass the US one. And after that, it won't be long until the US and its allies will realize it will be healthy for them to mind their own business when China takes over Taiwan.

[1] https://fortune.com/2021/01/18/chinas-2020-gdp-world-no-1-ec...