China might purchase the data and train their models just to make the AI bubble pop. A few billions to throw a wrench in your competing superpower economy might be totally worth it

If they did that it would be pursuing a commodify-the-complement strategy of some kind, not just "popping" a bubble. Same as nVidia publishing their own open models. If anything the value of everything AI would rise even further due to Jevons' Paradox.