I would be very surprised if that were to be true when comparing like-for-like e.g. not comparing an SF-based programmer to a landlord in a fairly empty state.

I would be very surprised if that were to be true when comparing like-for-like e.g. not comparing an SF-based programmer to a landlord in a fairly empty state. There have always been labourers in wealthy countries that are better off in pure "numbers" terms than landlords in poor countries. The average landlord in London or SF is likely wealthier than the average programmer in London or SF.