Facebook won, because Murdoch (Time Warner) bought MySpace and started to milk it, instead of investing more money. MySpace was written in the ill-fated Coldfus

Facebook won, because Murdoch (Time Warner) bought MySpace and started to milk it, instead of investing more money. MySpace was written in the ill-fated Coldfusion language and web framework and porting MySpace to a newer dotNet based Coldfusion version paved their way to a slow unstable server platform, years long stagnation, very high Microsoft product license costs and so. MySpace stagnated, that's why Facebook had the chance to win. And MySpace had the chance early, because Friendster stagnated because they could scale their website to keep up with their growth.