This study is a historical documentation of the recent trends of Sony’s and Samsung’s engagement in the cultural industries mainly by examining convergence between their own hardware and software to ascertain whether this trend is confirmation that Sony and Samsung play pivotal roles in the cultural market. This chapter investigates the cause of the changes and growth of Sony and Samsung, and it discusses the similarities and differences between them, with a focus on corporate policies and business strategies in convergence. In particular, it articulates the ways in which changing corporate policies have played a critical role in the growth of local-based transnational cultural corporations, because what makes them different from other firms is their approach to corporate policies of convergence.