'easy to do business' isn't just about regulations. It's often about fishing where fish are.
Tangentially related to differences in regulation between states, but interestingly Oklahoma has a nearly ironclad ban on noncompete agreements for workers. Has some fascinating effects for attracting skilled labor there. I know welders, mechanics, electricians, etc based in OK that are at the top of their game nationally and earn mind blowing salaries hopping from contract to contract, like sports players. Usually unionized as well, so reasonable work-life balance to boot.