[mathattack]

Multiples of Money is actually another way of saying IRR - it's just adding the dimension of time.

Christensen is ripping on the slaving devotion to single metrics that some firms follow. This is very true. Any individual metric can be gamed. If you focus on IRR only, people will game it. Same with NPV. Same even with the Net Promoter Score that the article pushes. (Easier to delight customers if you aren't worried about profit.)

The challenge of management is balancing these measurements, and minimizing sub-optimization. In short term there are conflicts between them, but firms with a longer term focus find profitability goes hand in hand with net promoter score. But in many ways it's long term versus short.