Consolidation: 1. To unite or combine into a single whole 2. To make or become firm or secure. -- Random House Webster's Dictionary
Supermarkets long ago figured out how to merge companies into a single whole. It's the other aspect of consolidation, making the combined retail entity firm or secure, that has created so many problems recently.
Yet, this year supermarkets are showing signs that they have learned from the past as they steadily increase the pace of consolidation.