Now, the equivalent of mass immigration from Poland into Ireland, would be nearly every Irish citizen emigrating to Poland.
Well, I'd agree the problem is not immigration but mass immigration, movements of people on a large scale. And the figures you quote make some sense.
Having said that, who is to blame for this except the Irish government? Other EU countries such as Germany put the EU directives on the free movement of labor on hold, because they were expecting Poles to move in in their millions. And that was of course not going to work.
There is always a need for immigrants because in industrialized countries some low skilled/paid jobs the locals just don't want to do. So the newcomers are doing the host country a good service. But in my opinion immigration is a blessing and does work only when it is very tightly controlled.
Dell left Ireland and relocated to Poland.
This is really hypocritical. Why on earth do so many large corporations have their European headquarters in Ireland? Isn't that simply because of Ireland's low taxation and government incentives?
If Ireland have been implementing and promoting unfair competition towards the rest of Europe, it should not be the one to complain if now another country, Poland, is just does exactly the same.