I see a parallel between:
the change operated between 1917 (after Russell's death, Rutherford seizes power) and 1935 (under the mantle of the WTS, Rutherford discards the Bible Student Movement, chooses a new name, re-interprets the meaning of 1914, and introduces a radical new "two-hopes" theology). In the process, many who couldn't keep up with the changes were simply left behind. After a period of great decline, the WTS thrived again. A change that took 18 years to complete.
with:
The change that started in 2002 when Henschel stepped down as President of the Watchtower and the Governing Body seized complete control. Under the mantle of the WTS, a new religion is being forged, with a rebranding to JW.ORG, re-interpretation of the meaning of 1914 and "generation", heavy reliance on digital technology vs old-school printed publishing and embracing tele-evangelism and multimedia religion. In this process, those who can't keep up or don't recognize the religion they grew up with, fall by the wayside. After a period of great decline, the WTS should thrive again. We are 14 years into this transition. We haven't seen the end of it yet.
I think we're living this second time of transition, 90 years after the last one.
EdenOne