Are you infering that because the Watchtower Bible and Tract society have all these buildings and property they are not having financial problems?
Consider some other examples of organization's that have or are having financial problems
1. The United States (lots of buildings and land)
2. General Motors (lots of buildings, land, and machinery)
3. Chrysler (same things a General Motors)
4. California (Lot's of land and quite a few buildings)
5. Many other states with the same things as California
etc. etc etc
At this point, I don't think the watchtower society is having financial problems at present but I think (and I think they do too) there business model points to financial problems ahead. IE
lower rates of contribution
more members from third world countrys who need finanical help
Cash flow at this point is not a problem because of all the real estate recently sold in NYC but if expenditures continue as they are, and income being what it is, they could be facing some financial problems in the future despite all the land and buildings.