Earlier quoted context omitted.
Not trolling, but is there anything that says they're breaking the current laws in Spain? (I'm from the UK, so no dog in this fight althought I can see our gov implementing it at some point I reckon) Sure, they're taking advantage of tax loopholes I'd bet but in themselves, they're not necessarily against the law. They're probably paying all the tax in Spain they're currently, legally obliged to pay at the moment. Ju…
There's no such thing as a tax loophole. It's the law, and is written specifically the way it is for a reason. "Loophole" by definition implies that it's a mistake, and with the amount of money at stake that's incredibly unlikely.
For example, there is an interaction between US and Dutch laws that essentially means that US companies that transfer copyright to Dutch subsidiaries don't owe any tax to anyone on the profits from that copyright (it's something like this: Dutch laws say that the tax is payed in the country of origin, US laws say that the tax is payed in the country where the copyright owner resides).