We abandoned Bretton Woods and triggered the hugely inflationary seventies - the 73 oil crisis helped a lot here too.
We've had, and still have, the Nordic model.
Capitalism is dramatically different today than it was in the 1960s in most countries. We've had the monetarism/neoliberal experiment for 40 years.
We've had globalisation to completely disconnect capitalism (and capital) from government, country and employee - just join the global race to the bottom.
We have had a huge number of reforms to capitalism. Trouble is for the last 40 years all reforms have been in one direction: In favour of the capitalist.