"Blockchain makes the cost of decentralization bearable." This sentence is the essence of things. However, there are a few levels of decentralization that are applicable to various business cases.
The key is to approach each use case individually, and not be an advocate of the absolute decentralization per se. ;-)
All the way with you on that! Flexible, adaptive approaches are of the essence
I can't help thinking of the Blockchain as a social experiment which may end up helping us balance the two extremes of centralisation and decentralisation. Obviously we must not reach a static situation, the two must have slight fluctuations in either direction, which should assist in affecting some kind of social evolution.