Sforno on Deuteronomy 28:68/ספורנו על דברים כ״ח:ס״ח

1והתמכרתם, you will begin to manufacture or make by hand all kinds of goods the host country lacks in order to secure your economic well being, but

2ואין קונה, no one will buy these goods due to antisemitic reasons, as they do not want you to gain a foothold in their country.