The Great British Pubco SCAM explained in a piece of pie:
On a £4 pint at 3.75% profit a tied publican has to sell over 45 pints an hour to make minimum wage.
The reason that thousands of pubs are run down and dilapidated is simply because of this fact. They've been asset stripped over the last quarter century and chronic lack of investment leaves them not fit for purpose, 'proven to be economically unviable' and targeted to be suitable for conversion to alternative use by the pubco freeholders.
Bottom line in the scandal is: There's NO surplus profit left for the tenant to reinvest in 'their' business (the pub owned by pubco bondholders they are tied into through a usurious, onerous contract (lease) which amounts to nothing less (without irony) than legally sanctioned modern bonded labour.