Bangladesh suffers from grotesque over population and life is cheap. Corruption is merely a means to survival. "We" support this industry by purchasing its inexpensive products. If we don't then there is no work in Bangladesh - with the usual consequences ....
Also let it be said that the ( old / 1960s ) Canadian garment industry was not exactly innocent of abuse. The Toronto district, by way of example, was noted for little sweat shops employing immigrant women on piece work stuffed into spaces between fabric bales with barely enough room to breathe. It is a cut throat business under the best of circumstances.