Sketch dominated the landscape. Now they are a small percentage of the landscape. I characterized that as a 'fail'. Sure, maybe an inexact word but what else do you call going from 60%+ of the market share down to below 20%? And btw I currently pay Sketch $120 for a personal license (so they obviously haven't failed in that sense).
And spare me the 'context' thing. Because my context on this subject is as a individual contributor, leader of multiple large design orgs with dozens of designers all in the same tools, as an early Sketch, Figma, Invision and Framer X customer. The context is up there with the Console Wars but I don't have the room for that here.
What's your context?
Have a great day!