Final answer:
The concept of 'consumer treadmill' refers to the continuous cycle of product updates by companies to stay competitive, driven by designated design and marketing teams. Purchasing less or more durable goods could reduce manufacturing demand, possibly resulting in a recession and job losses.
Step-by-step explanation:
The scenario presented in the question illustrates a concept often discussed in business and economics concerning consumer treadmill or planned obsolescence. Companies engage in continually updating and changing products, like toothbrushes, in order to maintain a competitive edge and stimulate continuous demand. The truth behind this practice is that these companies have design and marketing teams whose jobs are to constantly 'improve' the products. This is perceived as necessary to stay relevant in the market.
However, if consumers were to buy less or opt for more durable goods, the demand for constant manufacturing would decrease, potentially leading to a recession and loss of jobs. So, the cycle continues to avoid such economic downturns.