If you have an estate of 900 pubs and growing and employ over 37,000 people, it places you in a very strong position to negotiate the leanest buying prices, it’s economies of scale, that’s why I can go into my local one (and it is a local, manager and same staff been there years) and buy a pint of cider for £1.99.
The original premises, a hotel, stood empty for a few years, Wetherspoons revived it to a very high standard retaining many of the original features and it’s now a great focal/meeting point in the small market town where I live.
Showing a video of a brawl in one Wetherspoons out of 900 does not depict the usual type of clientele that use there pubs.