Summing up complex ideas in single phrases is just as useless to the layman as expanding complex ideas out to their full meaning. The former over-simplifies and reduces understanding to cliches, while the latter confuses and alienates anybody not versed in the subject. I'm taking the middle road here and explain it enough, without getting into the nitty-gritty specifics.
Incidentally, you cannot sum it up as "product differentiation". There are differentiated products which do not form Blue Oceans. Many examples exist in the video game industry, but the most profound I can think of is the sub-genre of action RPG. The action RPG has a clear differentiation from the traditional turn-based RPG, yet there is no 'leader' brand for action RPGs as there would if it originated from a Blue Ocean. Product differentiation can be found in both segmentation and Blue Ocean Strategy. It is, in short, a component of markets, not an exclusive trait of Blue Oceans.
Sky Render - Sanity is for the weak.
