In an effort to boost the local textile industry, Country Y intends to decrease the import of finished clothing and instead start importing raw fabric. Although this shift will incur slightly higher costs due to tariffs, it is expected to support the struggling domestic clothing manufacturers who are currently facing tough competition from cheaper imported garments. Thus, increasing the import of raw fabric is considered a more beneficial strategy for the economy of Country Y than importing finished clothing.

Which of the following, if true, most seriously undermines this argument?