Pure conjecture. No cause and effect shown.
Why guess? We already did this and wealth creation was fine enough to build interstates, airports, hospitals and schools, AND allow every worker to have a home, a car, a vacation and a family supported by one income. Rich executives earned 10-15-even 20 times what the average worker earned. The rich lived a life of luxury. About the only thing the rich were not able to do was catapult their wealth into the stratosphere by screwing workers and consumers. Check out that video posted by Frank. Great graphics to show just how extreme wealth inequality has become. If you dare...
After top tax rates fell, the rich were able to do all that, tear our nation apart with extreme crony capitalism, and that's when wealth inequality grew.