Why the IPFS will provide the storage service

Had seen the indexes for calculating filecoin dispatched, and wondering for why the IPFS care more about storage service.

It seems the technology did not have more competency on it compare with typical cloud service, maybe it is cheaper, but as the data was stored in hardware not fully maintained, the stability should be low. Even the user tried to pay more on duplicating data, replication can still have more probability to lost after long time(for example 10 years) .