If it were another business that had made some strategic mistakes but fundamentally had a sound product then changing strategy, downsizing and other changes, if properly implemented, should result in future growth.
The problem they have is the foundation is built on sand. The WTS is a corporation. It was a publishing house, now it's a property development business. However, they is a dependence on a membership to provide cashflow, labour and to front it as a religion.
They have a product that is a sham. They have a product that is being exposed over and over again as mumbo jumbo. Less and less people are interested in it.
They can survive financially for years, decades probably, but they have fundamental issue with their message. I think they have a two way choice:
1 - continue as they are, stagnate and decline into a shadow of their former glory in 20-30 years.
2 - change the record. Become open, inclusive, drop major doctrines, stop being a millennial cult and more like a more mainstream protestant religion, stop the moral judgements and hope that being a nice social club is enough to keep people happy
IMHO the chance of them ever going down route 2 is slim to none.