What's stopping the dopes in Brooklyn playing hardball, closing down every major asset and siphoning off the vast majority of its money in Australia to the mother ship?
They have 800 congregations in Aust. That probably equates to around 400 Kingdom Halls, mostly in urban areas. They are probably worth A$ 500k each, probably more, so A$ 200 million total, or more. Title to each would still be in the name of the Aust entity. There is probably a trust deed involved, for each KH, but that may not be effective in protecting them from creditors. (This is a complicated area, but Google "tracing remedy equity" or "constructive trust".)
It is one thing for your local small business to play hardball, close shop, burn the books and restart somewhere else. It is not really feasible for a multinational to do the same, unless they want to abandon Australia altogether, and even then, it is problematic.