There are not many ideal decentralized storage system available till date for blockchain. I don't know why anybody noticed that and proposed solution for this problem. Anyways since CATA has taken responsibility of that we will see lot others joining in in coming days.
Since no one take notice of this while CATA took that serious and now they will capture the share. I only mistake they are making is that they are not giving away details of this project and this will hurt them.