It seems like this policy would lead to shortages in less common sizes of clothing.
My hope, however, is that this reduces overseas manufacturing in favor of domestic, which would allow retailers to dramatically reduce the shipping costs for small production batches, so that they’re able to simply produce more small batches of less-common sizes in response to demand. Sure, they might see a few percent lower profits per item, but they’ll be able to sell considerably more of their product simply by raising their supply to meet demand with finer granularity than the cheaper ‘produce an entire season one-time only and store it in a cargo container’ model offers today.