When national legislatures call people to testify, that's not a neutral information-gathering exercise. The MPs are going into that panel with a very clear idea of what the witness is going to say, and how they can spin it towards their preferred talking points. Zuckerberg isn't a UK citizen and didn't authorize any misconduct specific to the UK; why should he personally participate in Parliament's ritual shaming of Facebook?

> why should he personally participate in Parliament's ritual shaming of Facebook?

Because it sends a bad message, and Parliament et al have the ability to materially affect facebook's revenue by passing & enforcing laws like the GDPR etc

Looks like zuck is victim of the echo chamber of facebook feeds.

If livelihood depends on not understanding something, it is impossible to make them understand.