Economy of New York City feet (37.2 million m) that same year, is the largest central business district in the world. New York City is distinctive for its high concentrations of advanced service sector firms in the law, accountancy, banking and management consultancy fields. It is the top global center for the advertising industry, which is metonymously called "Madison Avenue". Silicon Alley, metonymous for New York's broad-spectrum high technology sphere, continues to expand. Finance, high technology, real estate, insurance, and health care all form the basis of New York's economy. The city is also the nation's most important center for mass media, journalism, and publishing.
Media of Bulgaria concentration on the basis that it would not establish or increase a dominant position in the distribution market. According to the Media Pluralism Monitor, "concentration of media ownership is very high". The top 4 major owners in the broadcasting sector have an aggregated market share (based on advertising revenue only) of 93.35%. The top 4 major owners of daily newspapers reach an aggregated market share of 79.7%. As for Internet Service Providers (ISPs), they have an estimated market share which is above 50%. Concentration trends are also present in terms of audience and readership whose concentration is "very high" according