Don't forget that it's not _just_ the pint that will be more expensive. The consumers, after paying double or triple the usual electricity/gas price this winter, and suffering from a inflation of more than 10%, will have to have enough spare cash to stomach an increase of the price of a pint.

There is absolutely no chance that the pubs will be able to have as many customers as before.

And for B) the answer is simple: they'll buy their alcohol at the shop and get drunk at home