Harvard Business Review

DECEMBER 17, 2014

The management consulting firm Eden McCallum, from London, does strategy work much like McKinsey, the Boston Consulting Group, and Bain – but with one important exception: none of its roughly 500 consultants are on the payroll. Eden and McCallum’s idea was: Come work for us! All of them work on a freelance basis.

McCallum 13

McCallum Competitive Advantage McKinsey Consultative 13

Harvard Business Review

AUGUST 7, 2012

At first blush, it sounds like something straight out of the mind of Scott Adams, but John McCallum's guide to management one-liners in the Ivey Business Journal has its sincere merits. The Far Reach of Supportive Senior Managers (Strategy+Business). HE LIKES ME, HE REALLY LIKES ME. But is the end of the print edition really nigh?

McCallum 11

McCallum CFO Covey Long-term 11

Harvard Business Review

JANUARY 3, 2017

Given these network effects – as many proclaim – markets get “winner takes all properties”: the largest network will win, crowding out the remaining competitors (like MySpace and Google+). It is a misconception to think that network effects inevitably and always lead to a winner-take-all market.

McCallum 12

McCallum Competitive Advantage Business Model Consultative 12