"We cannot seek achievement for ourselves and forget about progress and prosperity for our community... "--Cesar Chavez

It's a package deal. It's impossible to separate the needs of one from the needs of many.  
Mr. Chavez acknowledges that we're all connected, and he's right.
Simply put, were it not for the labors of ordinary people, the rich wouldn't thrive.
The rich pay the workers who build the factories and connect the factory to the marketplace with roads and telephone lines and computer cables. Orders can then be placed for the necessary raw materials to be purchased from farms and other factories. Then trucks and trains deliver the raw materials to the factory so the workers can make the product, which is then shipped out on trucks, trains, and planes so customers can buy what is offered.
If the rich scrimp on the payroll, the workers, builders, truckers, farmers, foresters, factory workers, architects, engineers, pilots and their families don't prosper.  If they don't prosper, the customer base disappears, the rich get poorer, and the whole shebang collapses.
All for one and one for all makes a whole lot of sense.