If you assume that (a) most manufacturing has moved to cheap-labor countries and (b) rent is a more important input than labor for restaurants / starbucks, then

If you assume that (a) most manufacturing has moved to cheap-labor countries and (b) rent is a more important input than labor for restaurants / starbucks, then it's not surprising that raising the wage floor doesn't hurt employment. The wage floor imposed by cost of living is already in effect in most major cities. A bolder move would be to impose a tariff on goods and services that use sub minimum wage labor.