They make very high quality components using extremely precise machining and good materials. Fixed gear hubs aren't all that complicated and they can't offer a product with much of any advantage over their competition, and they can't cut costs to a competitive price point while maintaining their high quality... so either they're anti-fixie or they're just uninterested in track racing, but the question you should be asking yourself is 'why would they make track hubs?'
i think the reason you want them to make hubs is that you like their anodizing and you like their brand. well... tough. there are other colored hubs in the world and part of why people like chris king components is because they are the best at what they are(except maybe their hubs and some of the newer styles of headsets). if they just made another track hub, they'd have to make it the best, and then even you would have a hard time rationalizing the price.
and yes, they make hubs, headsets, and bottom brackets. if you're going to make a 'few select components' that's a very legitimate grouping to limit yourself to.
the fixie thing is a fad. it's a fad that will last as long as there are bikes and streets, but it's a fad. no one's going to pay chris king prices for hubs when they can get phils for phil prices.
i'd rather have a frame that was made in portland than a hubset.