They can exist as long as there is exploitable cheap labor willing to work for peanuts with no job protection or benefits. As soon as there are real jobs everyone would leave such companies in droves... and their business model would collapse. In order for such a company to exist you need an indentured lower class that's barely surviving and has very little ability to lift itself up. In another words from a societal perspective such companies an anathema to be eliminated, not cheered on.