Why no Apple Store in Ireland (Republic)?
Well, that is simple - Money! If you live in Ireland as I do you know Ireland makes things very difficult to do business. Look at Dell! Ireland is TOO expensive to hold a major business. This country thinks they have a corner on the market and have something so special being in Ireland. Ireland is shooting themselves in the foot by making business so difficult. Ireland will never have an Apple store in Dublin, Cork or anywhere until they make some changes.
You can sign the online petition but it will still do no good. Apple knows it is not good business to deal here and will stay away. There are too many good countries willing to welcome Apple with open arms. Irish - continue taking your Apple business to the north, its your only option for the foreseeable future!