As this thread has mention BA Future Lab's, Ill post a bit of gossip that came up in conversation with one of their researchers while travelling on BA a while ago.
The cost to BA on LH flights of alcohol consumption by passengers in WT.
I suspect that way down the back there may well be limits arriving in the near future.
On my most recent LH flight to Asia in WT, the CSD announced that if one wanted another beverage then use the staff call button.
Anyway, I doubt it effects the majority on here...

only me..