What actually happens is overall production goes up and more people move upward in class - increasing the tax base. The idea is that we want MORE people to become wealthy. The best way for that to happen is to remove obstacles. Wealth cannot be created without risk. Risk cannot be taken without the probability of reward. Remove the reward ---> remove the risk. Remove the risk ---> remove weath creation. Remove wealth creation ---> stagnate the economy.
Punishing people who should be rewarded removes the incentive for those with the ability to take risks to actually take those risks.
If you want to perpetuate the poor and remove the ability for upward class mobility, raise taxes on the "rich" in the name of "fairness".
(BTW, I am not rich - not even close - just in case you wondered).