I fear that the simple answer is because we no longer live in a country (or political climate, if you prefer something more optimistic) where regulatory and legal structures like product liability are thought of being the role of government. The neoliberal response to this is "the market will punish Equifax and other, more responsible competitors will take their place or force them to change their ways." The very concept of human beings exerting political will to make a company do something is almost unfathomable these days.