Support alone makes it go negative, which is why it gets the same support as free Untangle. The fact either are actually supported is a huge value sink, but I don't think it could work any other way. What is else Untangle supposed to do? Stuff ads in the admin console?
So instead of going the corporate nightmare route, they tell their support team to handle tickets for HomePro and non-support carrying Untangle installs when they don't have any other tickets to process. From a business standpoint, this is an investment in PR but it goes against the bottom line. A larger corporation would just not do either.