I wonder if this is part of the reason why Cox stopped listing their small business plans and prices online.
And then there's the "promotional discount" that expires after a year or two, requiring you to call back in and threaten to cancel your service before they'll give you back the same price you were already paying. It helps if you actually have other ISP options.
I also think you should not be allowed to abandon your copper infrastructure without offering a replacement. AT&T refuses to offer new DSL service even if they have an old POTS line connected to your house because "we don't do DSL anymore" but I guarantee they would have a problem with it if I ripped their pedistal out of my front yard.