Invision actually tried building its own Sketch clone! It's hard to find much about it today, but Invision Studio was an attempt to move up the value chain and build the design app that feeds the Invision prototyping experience. It was extremely ambitious, and it fell absolutely flat.

Invision Studio came on the scene just as Figma was starting to eat Sketch's lunch, and lacking both Sketch's feature set and Figma's speed, it simply got caught in the crossfire. It must have been incredibly expensive to build, and its failure probably played a big part in locking Invision into its current path to eventually shutting down.