[diarmuidc]

The double Irish was gotten rid of in 2015 https://www.investopedia.com/terms/d/double-irish-with-a-dut...

[microcolonel]

You can see the impact of that crackdown in their tax receipts and tax to GDP ratio. Government revenue from Double Irish tax arrangements was fully 5% of their GDP.

https://data.oecd.org/tax/tax-revenue.htm

[josefx]

For every company already using it "will be", in 2020. Enough time to migrate to the next trick.