You may not have noticed but in June 2019 shares in Facebook and Google started to tumble downwards on the tech-heavy Nasdaq exchange. Facebook shares alone lost about $41bn or 5.7%.Why?Fears around increased government scrutiny, or as Nancy Pelosi put it up on Twitter: “The era of self-regulation is over.”The US House Judiciary Committee has opened an investigation into competition in digital markets, while the Department of Justice (DOJ) and Federal Trade Commission (FTC) dividing up authority