How did the titans of tech become so powerful?

This composite photo shows, from left to right, Facebook CEO Mark Zuckerberg, Amazon CEO Jeff Bezos, Alphabet CEO Sundar Pichai and Apple CEO Tim Cook.
Chip Somodevilla, Matt Winkelmeyer, Justin Sullivan/Getty Images
Four CEOs of Big Tech companies testify before Congress. Investors consider second-quarter earnings from GM, Boeing and more. And, you'll be able to watch Universal Pictures movies at home sooner after their releases thanks to a new deal with AMC.
The team
David Brancaccio
Host
Victoria Craig
Host, BBC
Stephen Ryan
Senior Producer, BBC
Jonathan Frewin
Producer, BBC
Daniel Shin
Producer
Jay Siebold
Technical Director
Brian Allison
Engineer
Meredith Garretson
Senior Producer
Erika Soderstrom
Producer
Rose Conlon
Producer
Alex Schroeder
Producer