It looks to me as though they unloaded (sold) the really embarrasing shares, like in Philip Morris tobacco, and the Rand Corporation ( or a connection therof that was developing an engine for military use), and so I guess they feel they will not be criticised by the R&F for gaining "donations" from the huge portfolio that Ms Riley left them all those years ago.
After all, they get many bequests.
But as said above, struggling families and individuals, being asked to donate more, take more of a hit in the pocket to travel to conventions, and to "do more do more", may well feel agrieved, and deceived, to realise that the WT has benefited by between just under a million $ and over three million dollars every year for well over a decade from this Trust.
This money could be used to make up the "shortfall" that every Convention seems to have, and go toward the new buildings. But no, they simply make this money disappear, and ask for fresh donations.
Still, if that doesn't bother the JW's, it is even easier to donate, even by Credit Card these days.
Praise jah and send in your Dollars !