Yes, GAMADV-X can do it (don't know if regular GAM can).
gam user EmailAddressOfNewOwner claim ownership FolderIDofTheTopFolder
I don't remember 100%, but perhaps the new owner needs to have access to TheTopFolder.
I usually add a pipe like this to my commanda, so I have a log of what happened.
| tee -a ~/GAM-activities/NewOwner-FolderID.txt