This is a shrewd move by Ireland.

Multinational companies chose Ireland largely because:

1) Low tax basis

2) English speaking EU country

3) Part of the Euro zone (less important than #1 and #2 to be sure).

Given the OECD tax agreement there are fewer low-tax destinations for companies to pick from. And because of Brexit there are no other English-speaking EU countries.

Companies in Ireland aren’t going anywhere and it remains a pretty good option for any new HQs looking to expand into Europe. Ireland is just making more money off of each of them.