June 18th, 2007, 3:02 pm
Actually, it's more like these just happen to be businesses that through a combination of skill and luck end up with tons of cash, and therefore don't need to borrow. Even if they had debt, though, they would only have ratings if they requested them from the rating agencies. Note that there are some companies (Nokia, for example) that have a rating but no long term debt--and, of course, there are companies with debt but no ratings. Rare, though.