The sub heading says property and pensions have replaced work - what are the differences between the USA and UK for pensions? As an American I think of a compan

The sub heading says property and pensions have replaced work - what are the differences between the USA and UK for pensions? As an American I think of a company provided retirement plan benefit, and this is not very common here outside of government work, so are they referring to the general system providing for retirement benefits (so that would include USA's social security/private retirement plans)?