I'm sure they are, but closer to my point: Illustrator is my daily driver, I do 99% of my work there. Maybe 10% of that is what I would consider "illustration." No way do these mobile apps allow me to go to one central location to be that productive. The mobile apps are simplified sketchbooky/ideation/quick prototype things which, in fairness, are all those apps are really trying to do. The fact that some users can coax artwork out of them is fine, but ignores the vast majority of 20-30 year Illustrator design veterans that need a full version where and how they work through to print, web, large format, etc deliverable.
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