Clothing has a huge profit margin (when manufactured overseas) especially at the higher end (for brands which do not invest in local production, which is most, because it is also hard to beat Chinese quality). It's better for these brands to over-produce on some items and lose the low-cost inventory, than to under-produce and not meet market demand, to not offer a range of sizes and varieties to meet individual taste, and not achieve wide distribution that's necessary to grow market demand. That's why regulation is needed here.

I get he economics, but I don’t think it follows that it’s a problem governments need to involve themselves in.