Earlier quoted context omitted.
Spain has very few large technology companies relative to the US. This tax is effectively a tariff on US technology companies operating in Spain, making it no longer an internal affair.
Last time I checked, comapnies are subject to the laws of countries they operate in.
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.
Just my £0.02
Edit: Just thought of something? Is there a google.es? If this is what they are talking about, would it not be easier for Google just to bin that one and for Spaniards to be automatically redirected to another Spanish-speaking version, like one of the South American ones?