Fanfic is not competition. I read what interests me--and the profic ain't interesting, at least not anymore. (Except books with Vulcans. Lots and lots of Vulcans. I like Vulcans. You put out anything with Vulcans, and I'm likely to buy it, even if I read negative reviews of it. I love Vulcans.) Point is, I haven't chosen fanfic *over* profic.
Source: wiktionary