None of which answers the question of why we can't manufacture things in other states? Things that California clearly doesn't want to manufacture.

Again, what is the reason New Mexico, or Utah, or Nebraska, or Tennessee cannot manufacture these things? And why is it a problem if they do so instead of California?

Big companies already handle manufacturing in other states. Often in states that have the worst education systems and quality of living. It is frequently done to reduce the cost of labor.

Manufacturing jobs are also some of the most unstable because big companies will shop around for tax breaks. Once they find a political sucker ... they build a new plant and close the old one which wrecks havoc on the local economy. PR teams are designed to mitigate negative feedback when this happens.

Smart politicians know this and will not concede to tax breaks for big companies, like Amazon.