In fact, it’s the psychological elements, combined with the value proposition of a product, that make the best viral growth strategies difficult to copy. They are often unique to the product itself—making them proprietary and more defensible. Dropbox’s folder-sharing viral loop is effective, but only those in a similar product category can utilize the same type of loop. Videoconference software like Zoom makes it easy to add meeting details that include links to the software itself—again, hard to copy unless your product has something to do with meetings.
