So long as the CCP delivers on economic prosperity this won't happen; people will not risk it. Those who can't handle it, and have the means, emigrate or have a plan B (i.e., their kids at a US university who can continue their career abroad; many Chinese would come to the US just to have a baby to ensure their kid had US citizenship--the US has clamped down on that). This is why the CCP's survival depends on economics.