I'm not sure how this is comparable.
Ireland's low tax works for Ireland because it has no competition, so it gets the "market" all to itself. If competition arrived, Ireland would have no option but to raise taxes to make it up for it - as it needs this funds. It would essentially force Ireland's hand on this issue.
On the OPEC side they have external and internal competition. Sometimes they can make it work because demand is higher than what external competition has to offer and what internal competition need, but if external competition has enough supply or internal competition need more than they are getting, it does not work anymore (and the price drops because of extra supply).