Filesystems have already been reduced to storage mechanisms for systems not people.
People just don’t organize files anymore. And that’s a good thing.
Most employees in relativley fresh organizations keep their files in OneDrive and Dropbox. 10..15 folders of random names and good search function that returns recent files on top. The older files just lie there, not botheting anyone because nobody is looking.
Files from other departments are found via links in Mail and Slack search - not as attachments to Email.
People launch Powerpoint (online) and use the recent files menu instead of browsing from the ”C: drive”
To rethink storage ignoring that people don’t store files anymore is futile. It’s nice for organized geeks (like me), but in general file organization is a thing of the past.