[walshemj]

The same argument could be made for the USA by individual states having different income and sales taxes.

That's just as bad as Irelands tricks helping to avoid taxes due in the UK and other eu states

[jopsen]

Well, it's hard to know the details.. But in the EU these kinds of incentives are generally illegal. As they are anti-competitive.

Which is also why we see the EU go after Ireland and require that they collect taxes from Amazon :) I recall Vestager starting to get the ball rolling a few years ago.

[sokoloff]

Companies negotiate tax treatments of contemplated activities all the time ahead of time with individual EU member states.

https://www.duijntax.com/en/advance-tax-rulings-negotiations as just one example reference I could quickly find.