I would say that the removed linch-pin was not globalisation, computerisation, robotisation or elite over-production but the removal of full employment.

With full employment, cheap goods means more workers for social services like education, research, culture, care for the sick and elderly etc. So that covers the first three. Also with full employment of academics, using all that education to make as many researchers as possible the elite production is steered into a field that benefits from more production instead of the win-lose of politics. Or to quote a friend "I woulld llike to do phD, but the field I am interested in is so meager, so I think I should get into parliament first", in effect using post-parliament priviledges to launch an academical career.