I dunno why this is downvoted. This phrase: "the problem seems to be we can't tax the rich because they take advantage of globalism to move their money around"

Is a tiny distillation of one of the most difficult problems facing legislators intending to mitigate wealth inequality across their society: if the rich get upset, they can just take their toys and leave.

This is, from the perspective of legislative generations, a very new problem that has crystallized in the past 40 years with the expansion and standardization of international trade law.