Without privacy and/or enforcement of constitutional rights, the storage is worthless. As far as business goes, what happens if data or connectivity is lost during business hours? The potential for information being stolen by governments and private entities is just too great to use such storage services for anything important. Those public SANs are massive 'hack me please' and no-such-letter targets.
If employees need 'unlimited' much storage to do their jobs, then a local san is the most economical option for reasonable performance. Even if employees generate a few hundred to several gigabytes of office documents in their entire careers, local backups with optional offsite/offline media storage service are still more than sufficient. For private/individual use, a crypted disk (or two or three) in a safety deposit box backing up multiple onsite/offline backups works best.