What is the main conflict in The Accidental Billionaires: The Founding of Facebook: A Tale of Sex, Money, Genius and Betrayal by Ben Mezrich?

"The Accidental Billionaires - The Founding of Facebook," by Ben Mezrich, is the story of boy genius and computer whiz Mark Zuckerberg and how he took the idea of a social networking site to heights that no one else ever imagined. Eduardo Saverin was a senior at Harvard when he met a young sophomore with a mop of curly hair, a faraway look in his eyes and regardless of weather or occasion, always wore cargo shorts, a hoodie, and Adidas flip-flops. The kid already had a reputation as a computer genius. He had created an Internet version of the board game Risk and a program for Harvard students called Cross-Match which would allow students to find out who was registered for what classes.