That's a trillion dollar question.

Firms will leave China once democracies around the world make a multi-lateral trade agreement and put our money elsewhere that's aligned with our core beliefs including or primarily free speech, say India. Get the agreement in place, have it come into effect in 2 years ahead of time, provide investment grants or loans to businesses (globally if they're aligned with democracy/free speech) who want to manufacture whatever will fill a gap in production for what the 80% of what consumers buy currently from China.

CCP could easily prevent this redirection of resources by allowing free speech and having elections.

Current CPP leaderships are blaming US/West for all the trouble.

Xi is just a little red guard grew up from the culture revolution the only economic solution solution was follow Mao's "Nationalize" way.

Prior to this, seeing the writing on the wall, my previous (Fortune 100) employer was already on the way out. I think there will still be plenty of F500 companies that stay, but they will do a better job of fire walking their business from their operations in China and walking away from all but the highest returns.

most of it is already happening, check chinalawblog (including tales/warnings of kidnapping). the only thing that hasn't happened full scale is nationalization of tangible assets, such as molds, machines or factories. But if you owe some (made up) bills to the local government when you close your factories, the local government will prevent you from grabbing your stuff.

With the election of Biden, the US will shift to a more cooperative strategy for containing China. There will be a higher emphasis on building/repairing relationships with allies in the region, so that American blood is not spilled (allies will help put boots on the ground, backed by American guarantees). How long this will continue and whether this strategy will continue regardless of the changes of leadership in the US is open to question, though.

As part of the 'pivot to Asia' initiated by Obama, America has helped many neighbors of Israel make peace with it formally. Iran vs. Saudi Arabia is the only other major engagement in the region. America will also likely extricate itself from Afghanistan completely in order to focus its resources on containing China.