The pub next door doesn't employee ~5000 people in Ireland and pay all taxes on those wages. If you consider the overall tax income generated by Apple as a comp

The pub next door doesn't employee ~5000 people in Ireland and pay all taxes on those wages. If you consider the overall tax income generated by Apple as a company having a physical presence in Ireland, it's much much more than the pub next door. So Ireland probably decided to sign an agreement to have a higher total tax income by making Apple settle in Ireland rather than elsewhere.