I’m assuming that the wealthiest families on earth mostly hold assets instead of cash, so what’s your point exactly? Are assets that generate cashflows worth something?
Well it's often measured at two given points in history and compared without taking into account the devaluation of the thing used to measure value (supply inflation is approx 100% per decade)
you are right and wrong. in the long term, a stone at the bottom of sea was considered wealth. the only thing that changed was to whose name the stone was attached in the village records.