Some will run under WINE, but why bother. It takes under a month of regular use to get used to a new UI. And there are projects out there that come close to mimicking those proprietary apps (like GIMPshop -- which may be defunct). Then there's the fact that tons of Windaz users already use FOSS anyway. Inkscape is the most popular vector graphics app there is AFAIK. I have never met an artist who doesn't use it. And Krita is growing in popularity with indie comic artists... And lots more.