In cybersecurity, a duopoly refers to a situation where two companies or entities dominate a particular market or sector. This can influence the development, pricing, and accessibility of cybersecurity products or services. When only two major players control most of the market, it can limit competition, potentially stifling innovation and leading to higher costs for consumers. Duopolies can also create security risks if both entities share similar vulnerabilities or if their dominance discourages the adoption of alternative solutions. Understanding duopolies is important for evaluating the diversity, resilience, and competitiveness of the cybersecurity landscape.