Broncos724 on 22 July 2008
Complimentary products are things you buy together, like toothpaste and toothbrushes. The defining characteristic of complimentary products is that if there is an increase in the sales of one, its compliment will also see an increase in sales.
However if there is a sales increase in the Wii, it certainly does not lead to increases in sales of PS3 and 360, or vice versa. Consumers have unlimited wants, but only limited resources. Thus the consumer will have to make a choice, and Nintendo, Sony, and Microsoft are competing for that consumer's business.
