> Monopolies can and do occur outside of mergers. You're right - and we might want additional rules to address that. But IMHO it's one thing if facebook gains

> Monopolies can and do occur outside of mergers. You're right - and we might want additional rules to address that. But IMHO it's one thing if facebook gains market dominance because users choose their product - that might just be a sign they've got an excellent product. On the other hand, if facebook feels the need to buy Instagram and Whatsapp because users aren't choosing facebook's product? That's a completely different matter.