The WTS is cash poor...the end of the steady flow of money from the publications (ended in 1990 for US, and 2000 for others) took time to have effect. Cash flow is the issue; even after selling properties for millions, the expenses of running a large corporation(s) has caught up with them.
I worked with large institutions, building, renovating, maintaining, and it actually takes more money for the last 2 than the former.
Cash flow, reliable and predictable has ended more or less since 1990. That's part of the reason the WTS is trying to set up this new process through the congregation level, not individual jws. How much does the WTS earn on any monies they have in investments?