It's a good talk & Varoufakis is an important voice - even then, though, they both make that same old mistake of conflating #capitalism with commerce.
No. Commerce is the garb capitalism clothes itself with to hide that it literally only represents the intent money would have if it had any, to gather itself into one big pile.
That's why capitalism also eats capitalists eventually; it doesn't need them. Money can own itself & that's where it will end.