So you get an English real ale brewery, then what? You can make large quantities of beer, but you have no way of packaging it.
In the UK, you would normally buy some casks and a cask washer, then just lash the still fermenting beer into the casks and send it out to finish fermenting in the pub cellar, but there is no cask market in Ireland.
So kegs then. It turns out that kegs need to be filled at a higher pressure and they also require your beer to be carbonated before you put it in, so you'll need another tank in the brewery for force carbonation.
It also turns out that beer is sold much colder in Ireland, which causes haze in your unfiltered beer, turning the punter off, so you'll need a filtration system.
In order to filter you need to drop the beer to 0 or -1C for a while, otherwise the filters clog, so you'll need some serious cooling jackets on your fermentors, which means a glycol system.
Do you see where the problems start to come in? They are cheaper because they don't have any bells and whistles, but in Ireland, you actually need a lot of those bells and whistles.
Add to that the fact that the market is much less open to micros and it makes starting such a business here much less attractive than it would be in the UK.