There is certainly a case for doing that. In California, regulations require a certain proportion of ships visiting ports to use shore-to-ship facilities. However, in California the facilities are already there.
The arguments for doing nothing have some limited grounds, but unless the facilities are there, ships will have no incentive to equip themselves to use them, and, as I have said, there is currently no mandate for their use. Equipping a berth for large vessels would cost about £3 million, and fully equipping all Britain’s major and medium-sized ports would probably come to about £100 million.