For better or worse, the same sort of sort-out that has shaken the US bar scene is likely to play out elsewhere, and Eire is not going to be spared. First, cars took the horse sense out of our mode of transport home from the pub or our willingness to walk further than across a parking lot, and set us up for a lot of misguided missile misery. It's taken a hell of a long time for a lack of responsibility to catch up with a portion of the population, but now we've now got puritanically susceptible portions of our populaces pushing a good idea to its illogical extreme. Going to a pub and having to drive a car home is risky in direct proportion to how low the legal limits are set and how zealous the local constabulary is. This may be part of the reason that the more rural pubs have been hit rather hard.
The smoking ban is another factor. It's odd for me to think back to when I was a teen and smoking was taken for granted as almost a right. Even in my parents' non-smoking house, it wasn't until the mid 1980's that anyone would think to ask if it was OK to smoke indoors there before lighting up. For good or ill, the ban has made drinking at home seem a much more live option to those who do smoke.
There always will be another portion of the population (males in their early 20s) that will be enamored with the loud flashy bar scene. Beer is just a means to buzz, which I suppose makes the unearthly noise level tolerable. These places will squeeze out the older, more adult-oriented pubs in the quest for a liquor license here, though I'm not sure if the system for licensing pubs is quite as bureaucratically strangled as it often is here.
So there will always be a place for the corner pub, they just won't be on as many corners, and will probably be in cities or towns that can put a reasonable quantity of customers within an easy walk of the joint.