Mass media is dominated by a small number of large conglomerates. Through mergers and acquisitions over many years, around six major companies now control around 90% of media in developed countries. This high level of consolidation raises concerns about these companies' outsized economic and political influence over what information is reported and how. While globalization has increased access to information, many nations still struggle with censorship and threats to journalists, and mainstream media ownership concentration risks lack of objective reporting and control by corporate and political elites to advance their own interests over informing the public.