Comment by spwa4

And the answer is simple: because countries sabotage each other's tax income when they can, even within unions (like US or EU, hell I'm told it even exists in Russia).

And with mobile capital, like multinationals, they can.

Ireland violated international treaties, multiple, to do this. Oh and they call it a huge success (despite that this will obviously suddenly crash and burn when other countries either block it or give better deals).

Oh and it cements the power of American multinationals over local EU companies, when the Irish government publicly and loudly claims they intend the opposite, and for reasons I don't understand, people seem to actually believe them.