[sqrt17]

Most likely they wouldn't stay at home but either would start their own small business (which would be more competitive now since people with employees have to pay them a livable wage) or, if they can be supported by their partner and not work, do something that's important for society but doesn't pay well (e.g. caring for your family, or for people in your community, writing, creating art).

I'd call it a wrong conclusion to assume that the thing that people do to unwind after a busy workday or what people do who are unable to work due to depression is the same as what people undertake when they can sustain themselves without spending the majority of their waking hours commuting and working.