Thursday 12 January 2012

Pareto's Law



            Many people believe that 20% of their customers account for the success of their business and the other 80% of customers are unprofitable and need to be ditched. Speakers on business topics and authors of business books promulgate this little gem.

            If you sack 80% of your customers then they will feel insulted and aggrieved. Assuming that you are dealing with a particular market segment, it is likely that many of the segment members will know each other. You could well be on the receiving end of a negative word-of-mouth campaign, not confined to the market segment.

            The facts are that this piece of nonsense is based on research by Vilfredo Pareto, an Italian living in the late 19th century. He concluded, correctly, that 80% of the land in Italy was owned by 20% of the population. That is why it is called Pareto’s Law or, sometimes, the 80/20 rule.

            It is not a law! It is not even a reliable rule. 80/20% only applies to land in Italy, over 100 years ago. In your business the distribution could be 99/1% or 50/50% or any other divisions of 100.

            A company that I worked with manufactured in India and distributed through UK retailers applied the 80/20 rule to their customers. They graded their customers by sales revenue and got rid of the smallest customers – 80% of all their customers!

            Unfortunately, grading by sales revenue is totally wrong. They should have graded by profitability. A better solution would have been to raise the prices to those customers contributing the lowest profit. The price-sensitive retailers would fade away and those who accepted the price increase would raise the profits of the producing company.

            The Black Swan put in an appearance – they lost their largest customer about six months later, who had decided to design and source their own stuff.  A little later, they lost another large customer. Needless to say, the company went bust 18 months later.