Global has built its business on profitable entertainment programming produced in the United States, and has long been criticized for not investing enough in Canadian content. Canadian programming carried on the network, such as a revival of 1960s American science fiction series "The Outer Limits", or the Chicago-set drama "Zoe Busiek: Wild Card", has often avoided Canadian themes, presumably to focus on sales to United States and international cable or syndication markets – although "Psi Factor" did include Canadian themes, including a "killer wheat" episode and episodes set in Northern Quebec and Halifax. Series initially intended for the U.S. and international market are sometimes called "industrial" productions and largely disappeared with the collapse of the international action hour market.