I genuinely don't see why there isn't more political migration in the US. I mean an effort by large companies like the credit card companies have done by all HQing in Delaware.
At the same time, there's also a dynamic where desirable states (those with thriving economies, liveable cities, talent pools from top Universities) end up taxing more and more, simply because they can. For many companies and individuals, the benefits of operating and living in high-tax states still seem to outweigh the costs. Although in the last decade New York and California have been losing people (partly due to companies leaving, partly due to cost-of-living and real estate prices).