A similar yet more apt question might be, where did the idea that parliament can get away with such large internet regulations come from?
For example, multiple muslim countries have laws banning women walking around without head scarf. Not only in their country, but everywhere in the universe. In practice, you see many women walking around without one, and the relevant lawmakers dont know or care. But suppose one of these women is in such a country, gets summoned in court for this, and proof is given she violated the law, even outside the country, then the judge has only one option: Guilty. Society runs on hoping this does not happen, i.e. selective enforcement.
For Europe, the situation is clear: They can get away with any law in Europe, as long as it doesnt cause them to be voted out. And it seems the general public is not going to vote them out, so they can easily get away with this.
There's been a lot of press about how little tax the Google's and Starbucks of the world pay in the places they derive the revenue, and some of the highly creative ways they avoid (not evade) taxation. That would seem to point at issues with international taxation agreements rather than copyright.
Top income earning families in many EU states pay shockingly little in taxes. They're able to structure their gross income such that reportable income is virtually nothing. These families are rich and powerful, and go a long way towards explaining why the EU retains its complex tax code.