Google drive file ownership

To take control of a file in Google Drive (and for it to come out of your quota) the person owning the file must press the Share icon (person) and Transfer ownership

Notice the 2 users here are gmail, not a custom google workspace domain

Google Workspace

You can’t transfer files from a workspace domain eg dave@hmsoftware.co.uk to non workspace eg davemateer@gmail.com.

Files can only be transferred within the workspace domain.

Sorry, sharing is unavailable at this time

When doing multiple files I got this error. What fixed it for me was turning off my uBlock origin ad blocker in Chrome.

Multiple files

I found that a screenful of files worked and any more could be problematic and slow.

Filter was owner:me and transferring to another user.

Filtering

Google drive filtering is very powerful - there is a pop up icon, or you can put in commands in the search box eg:

# only this user
owner:autoarchiverservice@auto-archiver-344412.iam.gserviceaccount.com

# only this user
owner:autoarchiverb@auto-archiver-344412.iam.gserviceaccount.com

# not this user and not this other user
-owner:autoarchiverservice@auto-archiver-344412.iam.gserviceaccount.com -owner:autoarchiverb@auto-archiver-344412.iam.gserviceaccount.com

Sorry, you have exceeded your sharing quota

On the receiving users end they got this message after around 50 files received.

Wait 24hs to see what happens. After a few days I was able to transfer 600 files to a new ownership.

Another solution

If possible another way is to simply login as that target user on your machine with Google Drive then use a tool like Beyond Compare to transfer files

Use Google Drive desktop for drive mappings then .shortcut-targets-by-id in Beyond Compare to get left and right side setup.

I filter by Orphaned Files (ie ones which are only on 1 side) then Ctrl L to copy to the left had side.