If he want's to declare 'capitalism' over then he should do more then say 'probably' as that is quite a range of possibility. How 'probable' is it and what alternative system does he propose that makes it much more 'probable'.

By the reading he suggest, I has fallen in with a school of economic thinking that is basically going back to 1960 socialist school of thought that in my opinion is so much theoretical nonsense with no practical reality.