Part of what Businesses pay for is support. Heck think of all the free databases/open source stuff that is funded not by the code but buy offering support/integration.
EDIT: Funny though, as a consumer I'd pay a little more, say 20% more for my comcast bill if they had what I'd describe is "nice and helpful support", but if that was the case, my bill would likely be accurate, and we wouldn't have all these BS fees and charges showing up out of nowhere, which coincidentally can make my bill 20% higher then advertised.
EDIT: Funny though, as a consumer I'd pay a little more, say 20% more for my comcast bill if they had what I'd describe is "nice and helpful support", but if that was the case, my bill would likely be accurate, and we wouldn't have all these BS fees and charges showing up out of nowhere, which coincidentally can make my bill 20% higher then advertised.