For Wolff, it is the system of capitalism that must be radically overthrown if we want to truly rectify the injustices of a construct that privileges elite
capital with the majority of the surplus produced by workers, with the freedom to accrue wealth untaxed, and with the discretionary monies with which to buy a venal political class and ensure that the construct never changes. Piketty, like Keynes before him, would tinker at the edges of the system, a bland reformist content to administer a gentle reproof to a greed-consumed elite order.
Perhaps a few tepid reforms would be enacted after years of bitter struggle by an activated proletariat. An alarmed administration might reluctantly skim a sliver of the gains of elite capital and redistribute it to the indigent minions. But as with Keynesian economics, rollback would swiftly ensue. Because by simply taking a wrench to the engine without rebuilding it, one leaves in place the very cause of the original injustice—a capitalist class whose cupidity is not sated, a consumer class whose wallets grow vanishingly small while prices grow oppressively large, and the same cabal of influence peddlers whose swinish behavior brooks no ethic than cannot be reversed for pennies.
A lot of Wolff's speeches can be seen on youtube.
Well worth your time.
He is one of my main go-to-guys.