My take on this is that Ireland is now willing to come into compliance because post-Brexit, they now have a monopoly on "urban core that could sustain an HQ for multinationals in a natively-English-speaking country in the EU."
In other words, they relied on tax advantages as a differentiator for companies to choose Dublin over London for their EU HQ. But now, what would you choose if not Dublin? Obviously Paris and Berlin are candidates but if you're a straightforward multinational, or certainly a company that is actually based/headquartered in the US, you're going to experience a lot less of a shock in a natively-English-speaking country.
So it seems to be that Dublin wins now, tax advantage or no tax advantage. Which likely makes drawing the ire of other countries for being a "haven" less worth it.