The message they have been pushing for 150 years or so is "The End is near !".
In the educated, civilised world, people think " Yea ? maybe because of economic meltdown exacerbated by climate change, but not from some intervention by a non-existent god".
"Would you like a Free Bible Study ? ", " No thanks, that is just a book of fairy stories, myths, lies and legends. "
That is the reaction of all young people in the educated free world, which excludes the USA of course, which is neither free nor educated, and is stuck in some 19th Century time warp, and is a virtual Theocracy.
But elsewhere in the world, respect for the religion, and the Bible, is gone.
In the third world, which has little education or Internet access, they have some success, but only usually with very poor people over 40.
So as well as dwindling numbers, they have at present a Cash Flow problem, which can only get larger.
The J.W Org. days are numbered, and they will soon be an even more insignificant little cult, that is withering away fast.