I think it's a case of slowy slowy catchy monkey...
Case in point, I think Sligo was a craft beer desert until the Swagman opened up, within a few months Hargodans put in 3 craft beer taps. Would they have put those taps in if the Swagman hadn't opened, maybe but I doubt it. Perhaps another few pubs will see that people are willing to try different beers and won't go into pubs that don't offer that choice.