Senator, Whilst I can see your argument I can't help but feel you have made one or two assumptions that may not be correct.
Take two identical properties. One is a private dwelling, the other is a pub and there is a reasonable amount of land (and by that I mean carpark, beer garden etc.)
The dwelling would have a higher market value than the pub. This is why so many pubs are being bought by speculators, getting de-licensed and being turned into dwellings.
If the Bereney Arms was purchased by its current owners at 'dwelling value' then they were short sighted, got it wrong and are trying to recover their losses by either rent or selling on.
Or...
If the Berney arms was purchased at 'pub value' then they are trying to make a killing on the deal by 'proving non viability' de-licensing and selling on at dwelling value.
If the pub is valued and sold at 'pub value' then it is a viable business for an owner/publican. It might still be tricky if it were still trying to suceed as having an owner letting it to a tennent. I say tricky, as possibly still not impossible if nobody asks too much of the business.