Businesses Fleeing California

Let's see if you can tell me what these states have in common - Michigan, California, Illinois and New York. 
If you said that they are all Democrat run states and are far from business friendly.........ding ding ding........you are correct.  It is hard to be business friendly when you are huge welfare and entitlement state.  If you tax the rich and business owners (that the last time I checked were out to make money) too much they will leave.  They're rich - they can do what they want. 
Isn't some tax revenue better than none?