Everyone wants to get paid, but no one wants to pay.
Since ones in power have more control, the top end up keep getting paid more, while the lower ends keep getting paid less.
One example would be equity firms.
They buy a firm with borrowed money, and in order to pay back the loan, interest on the loan, AND make a profit, they apply the expensive knowledge learned from fancy MBA schools (that charge bucks) and lower cost and increase profit. And lowering cost always means paying less to employees. And increasing profit means charging more.
Little do the super rich realize, that soon enough there will be no middle class to buy their stuff/services. And eventually the rich/superrich can only sell stuff to each other, while us peasants watch on smartphones from our slums using youtube service and enduring all the ads since we can't afford the $20/month to hide the ads...