They should charge executives Irish income taxes if they pull that off.
(While Ireland's corporate taxes are low, their personal taxes are ~59% over ~100k, and that _includes_ capital gains, and a lot of things that are tax advantaged in the states)
The loophole[1] regarding tax residency allowing a company to be effectively stateless was closed a while back. That was one of the things being exploited in this. The net effect, however, was that the companies in question just started using the Caymans and other similar jurisdictions.
(While Ireland's corporate taxes are low, their personal taxes are ~59% over ~100k, and that _includes_ capital gains, and a lot of things that are tax advantaged in the states)