Jack Dorsey onstage at a bitcoin convention on June 4, 2021 in Miami, Florida.Joe Raedle/Getty Images Scott Galloway is a bestselling author and professor of marketing at NYU Stern. The following is a recent blog post, republished with permission, that originally ran on his blog, "No Mercy / No Malice." In it, Galloway describes superapps and why they matter both short-term and long-term. Finally.Two years ago I wrote a letter to the chairman of Twitter calling for Jack Dorsey to be replaced as CEO.