> Facebook brought a vastly better user experience that seems mundane in retrospect but it won because it was so much better. My impression is more that FB won

> Facebook brought a vastly better user experience that seems mundane in retrospect but it won because it was so much better. My impression is more that FB won because of Zuck's talent/luck/vision for weird acquisitions (instagram, whatsapp) that paid off in ways nobody foresaw. Facebook was by no means the clear winner then, and I would argue most of it's success since then has been first-mover in global markets. FB engagement has been in decline in the US for years.