Confus - oh come on now, please ! Let’s get real here.
It’s a cup of tea for goodness sake. Something which was offered to everybody on the aircraft (together with a light snack/refreshments) at no charge, just a year or so ago ........ when fares were the same as they are now.
Your analysis makes it sound as though BA are wrestling with the search for a strategy to solve world poverty.
Mind you, given the pace at which things move at Waterside HQ, decisions on complimentary tea could take just as long.