Final answer:
The claim that Windows 7's advertising campaign demonstrates a dual-extension strategy is false; it is rather a marketing strategy within existing markets. Microsoft's history of antitrust issues showcases its aggressive tactics to maintain market dominance in operating systems.
Step-by-step explanation:
The statement that Microsoft's Windows 7 advertising campaign is an example of the dual-extension strategy is False. The dual-extension strategy typically refers to entering a new product into new markets, whereas the given campaign is an example of a marketing strategy to promote a new product in existing markets. During the mid-1990s to 2004, the U.S. Department of Justice prosecuted Microsoft for including Internet Explorer by default in their Windows operating system, claiming it constituted unfair competition. This action indicates the lengths at which Microsoft maintained its market dominance, which had exceeded 90% market share for personal computers by 2013. Windows operating system upgrades are sometimes seen as planned obsolescence, especially when newer software versions are not backward compatible with older ones, thus pressuring consumers to upgrade.