Some people do come in - but these days, even for the last 50 years, not many from the D2D work. Most come in because of friends, relatives, spouses talking to them.
My mom was brought in 70 years ago-but not because of the message, it was because two nice JW ladies offered to give her mom an evening off and took my mom to the meetings with her. Then my uncle, too and later on the rest of the siblings. Others in the family came in this same way (all lived in the same neighborhood. I think they had something like one of those Baptist Sunday School Busses going on!). My grandma (and great aunts, save one) never really had much to do with the JWs other than accepting the free babysitting that was offered to her by the nice JW ladies. My mom, 70 years in the org brought in one other JW. She was her next door neighbor and long time best friend. She pioneered. Never brought in anyone from D2D work (permanently), but lots of nice people came once or a few times because she is the nicest lady you will ever want to meet. Too bad it is wasted on the WTBTS. My mom is the only person I know that could (as a stretch) be said to be brought in as a result of D2D work, but so far as her experience, she is essentially a born in-she never knew anything differently and never "Chose" to be associated with JWs, she just was dragged in, literally in diapers.
I think it is funny how the WTBTS has essentially admitted recently that their role is to make and keep money.
