I think a better requirement (that is, more likely to achieve the desired result) may be to make it clear on signup that there will be no human support provided. I suspect this would be enough to allow customers to make an informed decision, so that folks that value real support can choose companies that provide it. Today, I can sign up for a service online and only find out in my moment of need that there's no hope of getting help from a real person. But perhaps people would still just choose the cheapest option regardless.