The WTS. couldn't market and commercialize Jesus return according to bible scripture because it says his return
would be a visible one.
If you examine carefully how the WTS. got this date (1914) in the first place Fisherman you'd see the corruption
and stupidity of it and the reason no other religious organization has proclaimed anything of 1914.
To arrive at this date, the Witnesses take the account in Daniel 4 and apply a 360 day year for each of the seven "times" for a total of 2520 years. They add this date to 607 B.C., their date for the fall of Jerusalem under Nebuchadnezzar, and arrive at 1914 A.D., the date when Jesus supposedly returned invisibly in the heavens (The Truth Shall Make You Free, p. 300), the "appointed time of the nations" ended (The Time is at Hand, page 79), and the beginning of the end of the world commenced (Watchtower 11/15/50, page 438). Please consider the following quote.
"This marked time began in the year 1914 (A.D.). In that important year the 'appointed times of the nations,' 2,520 years long, ran out. If we measure back that many years from 1914 we come to the ancient date of 607 B.C. That year was marked for the overthrow of the earthly "throne of Jehovah" and for the destruction of the throne city of Jerusalem and its sanctuary and for the total desolation of the land of the kingdom of Judah." (From the Book, "Your Will," 1958, pp. 309-310, Watchtower CD, emphasis added).
The highlight of this stupidity can be seen by the WTS. using a 360 day Hebraic lunar year and transposing
it into are modern day 365 1/4 Gregorian day solar year system.