Because they violated a lawful summons. Sovereign Parliaments in multiple countries issued summons to Facebook for Zuckerberg and Sandberg. Multiple times, they pulled a bait and switch. In the United States, this would be like blowing off Congress and then one’s contempt hearing in court.
> FB should become a platform
What does this mean? And what does a democracy do when Facebook refuses to show up to provide critical information for that discussion?
Blocking Facebook is extreme. Large financial penalties, and possibly criminal proceedings against Zuckerberg and Sanders for wilfully evading summons, are more apt. But the need for something to be done in reaction to such brazen lawlessness seems necessary. And keeping all lawful options on the table when considering a response is prudent.