Centralized file storages cost less for data storage than non-decentralized ones, such as Storj.
can you at least show us the data about the price comparation, of course decentralized has its on perks such as privacy and trustless system
In OneDrive you can get up to 1 Terabyte of free storage. And actually nowadays it's so cheap, there are a lot of centralised solutions which can sync all your files from all your devices in a free cloud.