To be able to compete with China the West would need to:
- Match generous subsidies to companies, not just through banks but at the government level by building entire towns just for battery production.
- Making large parts of land uninhabitable for the cost-effective extraction of rare earths.
- Suppress wages at factories and engineering bureaus to be able to cost compete in manufacturing.
- Dramatically lower cost of energy production (only doable without renewables in the short term).
I just don't see any Western government having a strong enough mandate for any of the policy changes required to compete with China. The simpler reaction is just imposing tariffs.