Even “Imagine” is somewhat of a lampoon of lefty ideas.
No possessions, John? Not even a little recording studio or some piles of vinyl discs? Did you “share” the single with the world, or did it cost a few bucks per person? I guess your own imagination is lacking.
I assumed that his response would have been that it only works if we all do it at the same time. This of course requires what would amount to either a voluntary monastic order, or enforced totalitarianism regardless of what it is called, to cull those who won’t imagine.