Go to Dublin and you'll see that these are not just postboxes. Most of those companies have a significant amount of employees in Ireland. They also pay taxes to

Go to Dublin and you'll see that these are not just postboxes. Most of those companies have a significant amount of employees in Ireland. They also pay taxes to the Irish state (albeit at a low rate) which is used to further develop the country. Not a fan of what the Irish government did but it clearly helped Ireland to become what they are now.