I think the concept of decentralized storage is a very good concept. Siacoin is one of the better altcoins available in the market today and i believe siacoin will go up very soon. I am expect the price of siacoin to double by end of this year.
Unfortunately the price is falling every single day. Even when the rest of the coins have stopped falling, Sia keeps falling. Also there is Filecoin with similar concept. If Sia doesn't keep up with the advertising and expansion and mass adoption, it will be over soon.