An excellent summary. But a further detail is tax and tax relief.
The Irish holding company purchases the intellectual property from others in the group who did the development (directly or indirectly). They pay say €40 billion for this. This cost can be written off by the Irish holding company against Irish tax on the royalties from the products made in China (or Vietnam, etc). Ireland collects 15% tax on these royalties beyond the €40 billion write-down - which is still quite a lot of tax.
It is why we can't depend on this "froth" in corporation tax remaining in place indefinitely. Biden had it in his sights before Trump. But it requires a change being to be made in US tax law by Congress. Trumps tariffs can't get at it directly (but could be nasty in other ways).
Although the Irish companies own the intellectual property, this is not because they did the research, design, coding etc that gave rise to it. It was mostly done by yet other companies in the same group, mostly in other countries, and then those companies transferred or sold their intellectual property to the Irish companies.
The Irish holding company purchases the intellectual property from others in the group who did the development (directly or indirectly). They pay say €40 billion for this. This cost can be written off by the Irish holding company against Irish tax on the royalties from the products made in China (or Vietnam, etc). Ireland collects 15% tax on these royalties beyond the €40 billion write-down - which is still quite a lot of tax.
It is why we can't depend on this "froth" in corporation tax remaining in place indefinitely. Biden had it in his sights before Trump. But it requires a change being to be made in US tax law by Congress. Trumps tariffs can't get at it directly (but could be nasty in other ways).
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