Right, it adds an insane cost. You then need to raise that same amount of money.

However, when you consider that people are no longer paying for health insurance there's a large pool of money available.

CA needs somewhere between $50-100B to fund this project. The population of CA is around 39M (https://www.google.com/publicdata/explore?ds=kf7tgg1uo9ude_&...). That means, you need about $2,564/person/year. Or about $214/person/month.

If you compare that figure to the average health insurance cost for people in CA everything starts to look possible or reasonable.

Of course, there's still some massive political hurdles to get over. But the money is out there.