Walmart is rewriting the rules on retail leadership pay — and it's not subtle. In a sweeping compensation overhaul, the retail giant boosted total potential pay for its market managers to the neighborhood of $620,000 a year, The Wall Street Journal reported in January. That's nearly five times more than the role's former $130,000 base salary — and it's sending a clear message: Walmart wants its top people to think like owners, not just employees. Don't Miss: Deloitte's fastest-growing software c