Facebook doesn't seem any closer to data privacy regulation, much less getting broken up, after CEO Mark Zuckerberg's two-day visit to Capitol Hill than before he came. That's why Facebook stock rose so sharply during Zuckerberg's testimony to the Senate and House. Investors saw the same thing everyone did: A smart, if slightly robotic, corporate chieftain easily answering or swatting away questions from tech-illiterate politicians.