Curb sales of alcohol at airports, then watch the drop off charge, trolley charge, "express" security lane charge - and frankly any other charge they can think of rising to cover the shortfall in revenue from the booze pedlars. Airlines don't think it's their job to pay for the facilities, so the onus falls upon the traveller.
I have never been able to understand why people need to be getting pints of lager down their necks at 7:00 in the morning, bacon and egg seems a better choice to me! If it would make the family holiday flight more bearable by not having tanked up idiots on board I actually think it would be no bad thing. Might also make the cabin crew job rather less arduous, which would be a good thing too.
Whether the aviation minister should be wasting time on such matters? Well he probably ought to have more pressing matters in his red boxes..