Perhaps they could have learned from the massive mess Illinois has become. Amongst other left leaning states.
It's a trap for and by D Party pols. They've formed a base around
Screw-the-Rich Envy Politics.
Screw-the-Rich makes for a poor tax base, because people and money can move - people to low tax states, money from higher risk & profit potential to low risk, low profit investments. Businesses are less flexible, slower to move, but even slower to come back if tax-policy sanity returns.
A junior high student could figure this all out, which tells you something about
Screw-the-Rich Democrat pols!