MONEY, POWER, INFLUENCE....
Charles Taze Russell brought in way more as the Faithful and Wise Servant than in common trade.
Rutherford..... Boozeford loved living large, lived even better than Al Capone!
Franz/Knorr..... why rock a good thing you got going when you just inherited it all from Rutherford
GB 1.0 --Some probably believed, others were just too invested in comparison to social security/pension of not holding a real job for most of their lives.
GB 2.0- NO TRUE BELIEVERS..... just riding the gravvy train as long as they can....cuz it is better than starting fresh at 57yrs-near 80yrs old.
People (esp converts) get sucked in and than instead of admitting they made a mistake or got taken for a ride they try to salvage their 'investment' in the WTS and just keep on truckin' hoping the end will come before they die ....