I was just watching Color Mixing with Marco Bucci on Youtube. Great video, bought his book and colour mixing class on the strength of it. However, at one point he attempts to explain the differences in colour mixing in real life with actual paint vs. the same thing digitally. He explains that Adobe's Photoshop (which he and most professionals use and can afford) can't simulate real paint mixing whereas others (he gave Rebelle as an example, but I know Corel Painter can as well) could. I can't afford the familiarity with Adobe products that the professionals can and prefer to use Rebelle and Corel Painter. As Marco said: they are different. They are cheaper, they do watercolor and they are not owned by an (allegedly) evil empire wanting to steal images to train the AI that seeks to replace artists. How about a few less Adobe centric courses?