Assuming Wal-Mart actually sticks to its ultimatum.
If one of the most successful businesses in history can't find a way to turn a profit in one of the most populous, affluent areas in the country while paying employees enough to live in the same area, then maybe they shouldn't be in business after all. Like the article says, Wal-Mart needs DC. DC doesn't need Wal-Mart.
CostCo has no problems here and they pay around $15/hour.