Whole Foods shifting to centralized buying

Will centralized buying make Whole Foods a more formidable competitor?

Interactive Edge’s CEO, Zel Bianco comments:

Centralized buying does not seem to fit the theme of local sources including farmers, brewers, etc. Stopping the practice of brand reps in-store that allow these smaller players to promote their products also flies in the face of what Whole Foods is supposed to be. I guess it is too early to tell, but I don’t like some of the decisions being made and am starting to feel that the Whole Foods we knew and loved (except for some of the prices) will eventually be gone.

Will centralized buying make Whole Foods a more formidable competitor?