With the growing integration of artificial intelligence (AI) in cybersecurity, this article investigates the economic principles of substitution and scale’s elasticity to evaluate their impact on the return on security investment. Recognizing the potential of AI technologies to substitute human labor and traditional cybersecurity mechanisms and the significance of cost ramifications of scaling AI solutions within cybersecurity frameworks, the study theoretically contributes to understanding the financial and operational dynamics of AI in cybersecurity. It provides valuable insights for cybersecurity practitioners in public and private sectors. Through this analysis, ways in which AI technologies can redefine economic outcomes in cybersecurity efforts are highlighted. Strategic recommendations are also offered for practitioners to optimize the economic efficiency and effectiveness of AI in cybersecurity, emphasizing a dynamic, nuanced approach to AI investment and deployment.