New Delhi, July 17 -- Earlier this week, Commerce Minister Piyush Goyal told corporate honchos in London that India would over the next few weeks relax sourcing norms to attract foreign direct investment (FDI) in the single-brand retail sector. This is a welcome follow-through on a budget announcement to that effect, and the regulatory tweak should now be expedited to allow precious foreign capital to flow into Asia's third-largest economy. Stiff local sourcing rules have kept such companies as Apple Inc. from opening their own retail stores in India, and while their intent was to give local producers a leg up, critics have long argued that they needlessly force multinationals to drop their entry plans or rework retail models just for this market....