[tcbawo]

Margins will shrink to the point where economies of scale prevail. If garment workers tried this, it would probably not take long before they get priced out of business.

[nosuchthing]

Raw production cost only factors in slightly, there certainly is room and customer demand for boutique designs and customization options of such designs.

[tcdent]

Today, people shop for clothes that incidentally both fit them and match their style. You'd have infinite options for both.