From experience I know that there are a number of pubs in which the regulars see the premises as their own private fiefdom and resent any changes to the status quo, particularly if it involves a lot of 'noise' that they neither like nor understand. Same goes for bar staff as well. this has happened both in the UK and the USA, to my own personal knowledge.

The fact that this might bring in needed income to the landlord goes over their heads.