New Delhi, May 15 -- Once upon a time, a best-selling book would grant its author guru status. Having your name embossed on the hardback cover was an unofficial badge of expertise, whether you were an aspiring management thinker, a boardroom sage or a speaker-circuit regular. Unlike keynote invitations, books delivered credibility and had intellectual cachet. Not anymore. In an era where everyone seems to have published something, has the gold standard of thought leadership lost its lustre?

To understand how this happened, flashback to 1982, when In Search of Excellence by Tom Peters and Robert Waterman hit retail shelves with evangelical zeal. American businesses, battered by stagflation, oil crises and the rise of Japan Inc, were in se...