Trickle up effect

A listener tells us it's the trickle "up" effect not trickle-down. The mass of the population buys all the stuff and pays for all the services that make those at the top better off. It's another conversation today about the value and the worth of certain jobs and certain people. In China they're to cap the salaries of celebrities while in New Zealand the PSA is asking for public support for pay-rises for hospital admin staff.