Sketch is Mac-only, its interactive prototype mode was clunky and you couldn't even check it on mobile without a "Sketch Mirror" iOS app. This was a software by MacOS designers for MacOS designers.
yeah, but the point stands. that’s how Adobe took over the world, as well as Apple products like the iPad, the iPhone, etc. “by Mac users for Mac users” is historically a very strong opening position.
Not anymore, most work software is web-based and collaborative/multi-user by default. Sketch didn't do that and was quickly overshadowed by Figma. I doubt future software in this area will be desktop app-based.