Its just the prisoner dilemma.

If you don't your competition will.

We just need more spine in the country's legislation to close ANY loophole, because this wasn't illegal tax evasion, it was legal tax ellusion.

The point is that EU judged this unfair by Ireland and that effectively it stole revenue from other European counties to favor jobs in ireland.

Basically saying "you (country) can't have a lower tax rate than X" in our economic union.

Smaller countries with few industries would benefit disproportionately from bigger companies moving here the HQ.