I think you're mixed up about what Freemium is. Freemium means having a free option which allows people to become familiar with a product, and then paid plans

I think you're mixed up about what Freemium is. Freemium means having a free option which allows people to become familiar with a product, and then paid plans which add functionality. Examples are Yola which is free unless you wat your own domain, Highrise which has a free "solo" package, Acunote which is free for a certain number of users etc. This is very different from "build it, they will come, figure out the money later" which is what Facebook, Google, Twitter, Tumblr and the like do (monetising these services inevitably leads to an advertising based revenue model).