I'm playing devils advocate on this one..
No one likes to see a pub closed - as often they were an important hub of the community. However, it seems to be a general sign of the times, and probably down to a 'perfect storm' - due to things such as the smoking ban, and allowing supermarkets to sell alcohol, in some cases 24/7, providing the option for cheap, home drinking.
If this ongoing pub decline was ever going to be defeated, it would be due to other dramatic changes - such as restricting supermarket alcohol sales, and in the case of Sams, allowing vaping inside (as do some other pubs) even if restricted to a particular area or 'vaping room', reminiscent of the old smoking rooms. Some good food venues survive, but are usually up against constant competition from other food venues.
Ultimately, this problem exist amongst all breweries - and usually the closing of non-profitable pubs, is more down to damage limitation, to the business as a whole.
The only thing I would say about Sams' pubs, especially those struggling to stay afloat - is that the brewery could adopt some creative flexibility to suit those venues - who are probably trying to compete with neighbouring venues offering things such as, indoor vaping, music (live or background), other entertainment, etc., etc.
Without some flexibility and business acumen (forward thinking) the Sams' business risk becoming, not only another victim of these changing times - but one of the bigger victims, as its competitors use their flexibility and business common sense, to weather the storm, and ultimately, offer customers more of what they want, other than just cheap beer, and a quiet place to chat!!!