Earlier quoted context omitted.
I've dug into this through the documentation and in discussions with workspace support and its not as bad as we fear, at least in terms of purchases. If you cancel your workspace account, then the individual user accounts will still have access to non-workspace services [0], which importantly includes Google Play and all access to your purchases will be retained. Any other google services which aren't core apps will…
> Since the account exists, it cannot be used to sign up for a free personal account, and you can never use google docs or have google docs shared with any former GFYD account. OK, that's actually terrible. Is there any way to delete the account and start fresh clean slate, so you can use that email address for an ordinary free google account that's just like any other? The whole reason I had a custom domain was to b…
Of course now I'll have split-brain because my photos are locked into the old account (trying to share and save doesn't work because Google forgets that they are supposed to be zero-rated because they came from a pixel).
I'll see if this rename works, then I can slowly migrate off of the other Google services. For services that I still want I think you can transfer YouTube accounts between Google accounts. Same with Play accounts (you need to pay but apparently you can ask for a refund for a transfer).