Casino gambling would harm the existing tourist industry, as time and money spent by tourists in casinos would reduce their time and money spent at the Polynesian Cultural Center, Maui Ocean Center, showrooms in Waikiki, and other destinations where tourists spend money.  Those businesses would experience reduced income, and unemployment would result.  Casino gambling would also create more pathological gamblers among residents.  Their mental illness will spur them into debt and unemployment, increasing homelessness.