Philip Krim has done his part to hasten the end of brick-and-mortar retail. Still, the chief executive of Casper Sleep believes that physical stores will endure 50 years from now—in a different form.
Krim co-founded the online mattress retailer, which launched with a single product, in April 2014 and helped prove that consumers would buy big-ticket items sight unseen. Since then, Casper has expanded to three mattress models, a dog bed and a line of bedding and bedroom furniture. Valued at $920 million in its last funding...