You can have a beer at cricket, rugby and other sports so in theory football should be no different. Would this lead to trouble? Maybe, but it's not "the bad old days" any more. Perhaps this could be allowed in a controlled way e.g. there could be blocks of the ground where you are allowed to drink, but other blocks where it's banned, and enable only trusted fans (i.e. those with STs or those signed up to a "responsible drinking" scheme run by the club or EFL) in the "wet" area to drink at their seat. When bringing beer into the stadium bowl you would have to show your ST or scheme ID to the steward and they would have to ensure you didn't toddle off to the (presumably "dry") naughty corner. Yes at our ground you would have the issue of fans moving from "dry" to "wet" but at other grounds without many empty seats this could work. It would be quite hard to administer but it's not as if something along these lines couldn't work - maybe it could be allowed for lower-key games with a less likelihood of trouble e.g. not Sunderland at home.