StorJ isn't really in this space as the entire system is centralized. You can't buy storage from anyone other than StorJ, nor can you sell storage to anyone oth

StorJ isn't really in this space as the entire system is centralized. You can't buy storage from anyone other than StorJ, nor can you sell storage to anyone other than StorJ. They don't have a free market like Sia (or even Filecoin). The protocol technically supports it but it's not implemented and doesn't seem to be high priority at all.