Critics of supply-side eCritics of supply-side economics have noted that: a.the aggregate supply curve is bound to shift to the right due to supply-side policies. b.income inequality resulting from to supply-side policies is negligible. c. high marginal tax rates of the wealthy reduce investment. d.supply-side policies invariably have demand-side effects.conomics have noted that: Critics of supply-side economics have noted that: the aggregate supply curve is bound to shift to the right due to supply-side policies. income inequality resulting from to supply-side policies is negligible. high marginal tax rates of the wealthy reduce investment. supply-side policies invariably have demand-side effects