At least in western countries? And if so - how will they solve it? Has it already started to happen?
What I'm getting at is; we all know how JWs are told not to get lengthy educations and to be very careful with what they read on the internet and in non-WBTS literature.
But the people they visit when they go door-to-door don't have any such restrictions put upon them. You'd think that at the very first return visit, the 'door' will have checked things out online, and may have a lot of valid objections and/or questions for the JWs. Not only that, but people get 'educated' just by reading stuff on the web for themselves as well, like on Wikipedia - about everything from religion to science.
So - providing the JWs actually get conversations and studies - can people they visit become pretty much like exJWs without actually being exJWs? And ask them questions that will make them think, and perhaps curious enough to research it further themselves, even though they're not supposed to? Not just the return visits, but any 'door' they may visit?
So that the one thing they really are told to be eager doing, turns into an "enemy" of their faith?