What differences did you see? They seem essentially similar. The exception being:

> We should shift more of the tax burden onto capital, including by raising the capital gains tax, probably to the same level as taxes on labor. (2019)

vs

> I agree that taxation should shift away from taxing labor. It doesn’t make any sense that labor in the United States is taxed so heavily relative to capital.

> But rather than move to a progressive tax on capital, as Piketty would like, I think we’d be best off with a progressive tax on consumption. (2014)

He does seem to have reconsidered the utility of a yacht sales tax.