The attraction of consumption taxes largely IS that they are regressive. That's certainly why people like Bob McNair pushed them.
A billionaire who spends 0.2% of their wealth every year, paying a 100% consumption tax on that would still have a vastly lower relative tax burden than somebody who spends their whole paycheck but only pays 50% consumption tax.
A billionaire who spends 0.2% of their wealth every year, paying a 100% consumption tax on that would still have a vastly lower relative tax burden than somebody who spends their whole paycheck but only pays 50% consumption tax.