Da Furious, this is a great comparison. If WTBTS was in any other business, lets say financial advisers, or even map making, they would have been broke years ago, because of their history of production of an undependable product.
My Dad, rest his soul, used to say, "Not to throw good money after bad". To stay in the investment with WTBTS, is not a passive, just wait and see if the stock increases in value, time of waiting. It dearly cost time, money, physically, and emotionally energy as a great dedication to keep the Nazi high marching step that the WTBTS is constantly demanding in their "do more" do more, "do more" organizational attitude.
I know several older witnesses that have made the comment to me or close friends, that they have too much invested to stop now, because basically, they would lose their families, friends etc. We know the cost.
It took me awhile to figure this religion out, and I was disadvantaged in my thinking as I was indoctrinated from infancy. However, thankfully, I have my wife, daughter, and myself out of this religion, and we couldn't be happier. We are "investing" in other areas of life. My wife loves her job as a registered nurse (graduated post witness) and is impressed with whom she is working with in the hospital, their morals, their goals, their commitment to the community, how they want to freely serve the community when they retire. It has taken a number of years to see "my investment" start to pay off, especially after loosing sooooo much when I left. I lost everything, but we bent down, and with broken tools, rebuilt, an we are happy with what we have accomplished.