As many said at the time this was implemented, people tend to be overly optimistic about their ability to contribute on those anonymous surveys and as a result, there was an unrealistic amount promised. And the WTS likely knew this was going to be the case.
I was in a congregation that built an expensive new hall based on what was promised on the "survey" slips. The few months afterward were okay, but the amount collected started dropping to considerably less than promised. Of course all the JWs over-estimated how much they would be able to give. They're constantly told "jehovah will bless your efforts that are in harmony with his will." The sheeples reasoned "if I donate generously, jehovah will pour out his blessing! I'll probably get a raise. My car won't break down. I won't get sick." But the reality was that they amount the congregation had been collecting before the "survey" was already more than most of the dubs could afford.
"jehovah's blessing" is as phony as the "spiritual paradise"
