Funny. I read that article completely independently of this site.
Speaking as someone who does know a bit (not a lot, just a bit) about economics, the point of the article is not that the Oregon economy is dependent on Coraline, but that over the years Portland has developed an analogue to New York's "Warhol economy" that the author has termed, a bit randomly, as the "Coraline economy".
The "Warhol economy" is the small universe that has developed around the bars, cafes and academies of New York where talented people can run into other talented people and make things happen. It's named after Andy Warhol's 'factory of art' in New York, dedicated to the mass manufacture of striking artworks. This is important to the New York economy as the cultural influence of New York is a vital motor of the various entertainment industries, which in turn keep New York afloat independently of the fickle conditions of Wall Street.
Portland has a smaller-scale version of this with a strikingly different character, but the same vital importance for the economy in bad times (which is why the same writer is immensely sceptical of Florida and Detroit, because they lack the same cultural climate). It includes bands like the Decemberists and a strong emphasis on folk-indie kookiness that drives the production of content and independent IPs. Coraline is a notable example of this output, but by no means the only one.
I'm rather attached to the place, since I've lived there for a number of months and my ex-wife hails from there. I need Oregon to weather this economic storm or I'll never hear the end of it...
And Coraline, incidentally, is doing rather well for itself. It's on course to make at least $70 million domestically, and should make back its budget once it releases internationally. It's done a lot better than most people anticipated, and I think Laika has a good future ahead for them.