I'm in no way a spokesperson for any manufacturer, but I can't see that any cutlery company can produce the range of knives they do in any one factory while still achieving the required quality or price constraints.
In other words I don't think Spyderco making Byrd knives in China is putting anybody in the US out of a potential job because those knives only exist because they can be made at their low cost. Likewise, the maker in Taiwan is by all accounts a very low-volume manufacturer essentially producing a large run of 'custom' (in terms of quality) knives. I doubt the quality level they can achieve could be done in the US without costing silly money, and so those designs probably wouldn't be made either.