Facebook steals your attention and then sells your eyeballs. Actually they use terms of service agreements to legally capture your attention to sell to advertisers. Your attention is attracted to Facebook by the containt which is the bait in the hamster capitalist trap but it's still hamster capitalism.
On Steemit you have a voluntary market without coercion, without contracts, where you don't need ads to monetize people. Other people attach a value to the content they like and through collaborative filtering they vote up what they prefer. This collaborative filtering could be seen as valuable because over time it's going to get better and better until a swarm AI knows what everyone likes or wants.
Steemit has the potential to replace Facebook, Amazon, Ebay, etc. Steemit is not competing with Bitcoin or Ethereum nor is it competing for the same people. I understand why it would seem the money comes from no where but the money comes from the wealth of networks of human beings. People have value to other people which is why Steemit will generate value for as more people join it.
Steemit is better because you're selling your content