California is a drop on the ocean compared to what it was in the 80's. It is far from being a powerhouse of anything. They cannot even figure out how to supply enough water to the cities and the farmlands. They can't produce enough electricity for the state. Businesses are leaving in droves. Even Elon Musk, after Newsom begged him to stay, is packing up and moving to Texas.
All of the western states are filling up with California ex-pats. Being one myself, I notice California license plates and they are everywhere. I live in Utah and see then everywhere. I've been to Arizona 3 times in the last year and they are everywhere there also. This last time I we also went to New Mexico and there are California plates everywhere also. Although my sister-in-law (who we were visiting in Albuquerque sees a lot more Texas plates. When the bulk of California ex-pats are moving to Texas I don't know why my sister-in-law thinks that Texans are invading New Mexico. We did see a few Texas plates when we were there.
However, there has always been a lot of California plates in Utah. The two biggest population of members of the Church of Jesus Christ of Latter-day Saints are Utah and the LA Metro. Because of that there has always been a lot of migration back and forth on the 15. There is just a lot more now.
If California keeps voting in idiots like Newsom and Brown, California will become a crap hole like Venezuela. San Francisco and LA pretty much already are. The Democrats have exponentially increased the homeless population in California.