An example is a stockbroker who buys and sells securities in a portfolio more frequently than is necessary, in order to generate commission fees.
In this strategy, an investor is advised to repeatedly buy or sell small lots of a security as the price changes.
In this way the overall cost is averaged down as prices fall, and the investor is protected from market fluctuations which can be very difficult to accurately predict.
Companies sometimes intentionally deliver products which are not durable or reliable, so that the customer will have to replace them, in what is known as planned obsolescence.
Examples of this strategy include razors (and their blades), computer printers (and their ink cartridge refills), cell phones (and their usage time), and cameras (and film).