Missionaries are content creators
Missionaries experience all the joys of creating content (from ideation to engaging with supporters) and little of the friction.
Content means cash
Supporters easily engage with content because the experience encourages and prompts giving. The entire experience generates a heart thankful to give.
Distraction kills
The product competes for scarce attention. The product, even before opened and throughout its use, invites engagement and overcomes the lures of alternatives.