Interesting spin on saying they can save money by not providing 24/7 support.
24/7 support is pretty important to some. This should count as a significant detrimental change to their contract and thus mean people can leave/transfer without penalty.
(I don't think I would even if it meant I could, but could be a way out for some.)
Recently moved from BT Infinity 2 to PlusNet. Very happy so far.