Companies like Apple, Microsoft, Intel, Pfizer and IBM have been in Ireland for decades. They may come for the tax but they stay for the people. It has a highly educated workforce that is very flexible and easy to manage/work with. I've lived and worked all over the world and Irish employees are the easiest and most fun to work with - even compared to the UK. It's pretty simple to get visas for companies. Accommodation can be a bit tricky to sort in Dublin but it's nowhere near as expensive or bad as San Fran etc. People generally don't mind moving to work here as the work/life balance is good and it's a super safe/friendly place for foreigners and families.
It has some industries with significant clusters (pharma, data, aircraft leasing, finance, tech, marketing) a stable political and social environment. It's civil service is generally efficient and isn't corrupt, it's easy to pick up the phone to them or a politician if you have a problem and need advice - even as a small business.
It's also the only native English speaking country in the EU now, cheap to jump on a plane to anywhere else on the continent or the US and has good internet connectivity.
For more examples: https://www.idaireland.com/invest-in-ireland
Ireland has filled this role because:
a) you speak Irish English (~English), which is easily understandable by most English speakers
b) Ireland has consistently offered insanely low tax rates to american companies wishing to establish themselves in Europe. (This is coming to an end.)
That is it.
Whoa there, down with that sort of stuff now friend. That's not a nice thing to say.
I mean.. I don't think americans are speaking English, typically, if that's any help. They're speaking American, which is a fork of English from some point in time.
These people were just looking to downvote someone who were against their tax evasion cash cow. That's where their outrage comes from.
Any other outrage is a misdirection.
But you have but to drop yourself in Iceland or Denmark or Germany or France to realize how close all of our languages really are.