I read the new laws that Watchtower is taking advantage of. Sections 10.2 to 10.4 of the revised Charities Legislation
https://du0tsrdospf80.cloudfront.net/docs/90c10_e.doc
If the congregations have basically given all their money to the Org, only retaining a small balance in order to care for the hall, then why the need to invest for a return?
Will Watchtower transfer a much larger sum to these new charities such that a return becomes important?
Time to hide the money from the courts.