What exactly is the point ? How long it would take for the guy who washes the dishes in my favourite restaurant to buy the shoes I'm wearing? How long would it

What exactly is the point ? How long it would take for the guy who washes the dishes in my favourite restaurant to buy the shoes I'm wearing? How long would it take a techie in a hedge fund to buy a yacht? How long would it take the sales guy a Cartier store to buy that 75kUSD watch? More importantly, what would knowing this tell us about anything?