Irish policies only work if they appeal to the multi-nationals by having lower tax tates and better incentives than their neighbours or other countries in their trading bloc. If their rates are matched by other countries, the Irish advantage is all but eliminated.
A risk to the Irish model is from Brexit if it means that the UK Conservatives try to make the UK a lightly regulated haven. Then it could be a race to the bottom. The UK was the big supporter of fiscal independence for nations within the EU. With the UK gone from the EU, the Irish position within the EU will be put under greater threat.
Clouds on Ireland’s policy horizon:
EU tax plan ‘an imminent threat’ to Irish economic model
https://www.irishtimes.com/business/...odel-1.3674096
Sterling hits 23-month low vs euro as no-deal Brexit worries grow.
https://www.irishtimes.com/business/...grow-1.3977627
(Irish receipts from exports to the UK are diminishing)