[intAligned]

Sketch actually arrived in a period when the vector / pixel drawing tool space was pretty filled up by giants like illustrator and photoshop. They still hold the "best software in da place" title. But, Sketch found its niche by offering a mixed, self-contained solution. The point is, first, distinction: while Adobe brought real innovation, Sketch somewhat aggregated functionality. Today, there are new fields opening (AI suffices to keep the thread open for ages). So it's actually safe to say that there will be a) space for primary innovation applications and b) space for aggregators, re-configurators of selected functionality looking for niche functionality (very much like Coda, today totally disrupted, did with web development tools ~ 5 years ago). Just look at Sublime and Atom. Even Coda.. wasn't it Vim with some fancy ftp plugin and tree plugin?