A similar question was asked around 500 years ago: "is freedom of religion possible?"
The question now: "is freedom from religion possible?"
I believe that's what this verse is saying:
(Revelation 18:21) . . .“Thus with a swift pitch will Babylon the great city be hurled down, and she will never be found again.
Once enough of us have awoken to the destructive nature at the heart of religion it could indeed be banned.
One imagines a similar process to cigarette smoking: start with education and increasing the cost of the habit.