> AI company that would use this type of cloud storage as a AI document store / collaboration hub?

Wouldn't that run into the same problem the consumer end has? MS bundles 2TB of OneDrive storage for every user with a M365 license, and Workspace does more or less the same. You can already connect pretty much anything to them as is for pseudo-RAG/enterprise search.

The aggressive bundling from the big players have taken away most of the reasons to pay for Dropbox or box.com and other cloud storage providers.