I'll suggest Australia as a counter-example to all three numbered points, albeit on a relatively small scale (population ~25m). But I agree 100% with your fina

I'll suggest Australia as a counter-example to all three numbered points, albeit on a relatively small scale (population ~25m). But I agree 100% with your final point: people need time to adapt, and be willing to do so. Changing the system to something people trust even less would be bad.