The WTS selling agenda or acumen is and was to hype up fear that mankind is living in the last days since 1874 or moved up to 1914 and it did so by using current world events such as wars , political unrest , famine and earthquakes.
The turbulent 1960's fit the bill well, add in the 6000 years of mankind's existence to the mix and no wonder JWS at the time were living on a heighten edge of expectations.
I was there so I'm a personal witness to that.
Well it was effective to the poorly educated and emotional sensitive segment of the population, people who believe the mythological writings in the bible.
The commercialization of the Watchtower's products were sold with calculating hype, disingenuous corruption, fear and ignorance and the WTS/JWorg. pretty much still sells it religoius publishing cult in the same way.