This is interesting ,going back in time there is a definite thread of measuring spiritual success by financial gain.
What comes to my mind is the way the old time colporteurs depended on selling their books to survive ,even taking food as payment to keep their ministry going. Selling books was woven into the belief that sales = blessing.
I can remember brothers jangling the coins in their pockets to show their success in the service of placing magazines and books. And this mentality followed on into the quick build era of the eightees when they would quote Malachi 3 : 10 "Bring all the tenth parts into the storehouse, that there may come to be food in my house,and test me out please, in this respect ,Jehovah of armies has said, "whether I shall not open to you people the floodgates of the heavens and actually empty out upon you a blessing until there is no more want" "
So throughout the WTS history finance = blessing .This always troubled me over the years and I could not reconcile this because the congregations were in fact being coerced to dig deep for the money to give an appearence of blessing , and of course we would give money , because of the fear of failure of money coming in would be evidence of gods disfavour of the JW's in the area and this would then lead to challenging our faith , so we all felt that we had to make it work.
The same went for quoting the financial status of assemblies at the lunch break so we would feel compelled to pay up to save face.