We don't know that the assistant janitor at Apple doesn't have the killer taste required to run the company, but without any particular evidence of it, it's pro

We don't know that the assistant janitor at Apple doesn't have the killer taste required to run the company, but without any particular evidence of it, it's probably best to assume he/she does not. But we don't really know who was, is, and will be running the show at Apple, or how those matters of taste are truly decided. All we know is that this is the time they chose to officially announce Jobs' succession and that Cook is the person who they felt investors would have the most confidence in as CEO. The ultimate power is with the BoD, and probably with Jobs for the rest of his life.