Hey look! The fastest rising commerce apps are all platforms. Shocker. Offerup is a local marketplace for used goods. Letgo is a, uh, local marketplace for used goods. Wish is a, hmmm, marketplace for used goods. Flipp is a platform linking brick-and-mortar ad circulars to end user consumers and Venmo is, obvi, a payment platform that you should've heard of by now (and owned by Ebay). If you're a restructuring professional and you don't yet understand the implications of platforms on retail, you might want to do some homework.
We recommend you start with: "Modern Monopolies" by Alex Moazed and Nicholas L. Johnson. You can get it here.