It never gained converts, and it no longer produces income. But it is still important as a control mechanism.
True. Yet I bet JWs would disagree. I know JWs who have 'placed the magazines' with the same people for many years (20+), and those people have no intention of ever converting. Yet they are part of the 'magazine route'. They're classed as 'interested ones' (lol). A neighbour of mine has the magazines just because they don't like saying no (and I bet that's not uncommon).