Market dominance is a measure of the strength of a
brand, product, service, or firm, relative to competitive offerings. There is often a geographic element to the competitive landscape. In defining market dominance, you must see to what extent a product, brand, or firm controls a product category in a given geographic area.
There are several ways of calculating market dominance. The most direct is
market share. This is the percentage of the total market serviced by a firm or brand. A declining scale of market shares is common in most industries: that is, if the industry leader has say 50% share, the next largest might have 25% share, the next 12% share, the next 6% share, and all remaining firms combined might have 7% share.
Market share is not a perfect proxy of market dominance. The influences of customers, suppliers, competitors in related industries, and government regulations must be taken into account. Although there are no hard and fast rules governing the relationship between market share and market dominance, the following are general criteria:
* A company, brand, product, or service that has a combined market share exceeding 60% most probably has market power and market dominance.
* A market share of over 35% but less than 60%, held by one brand, product or service, is an indicator of market strength but not necessarily dominance.
* A market share of less than 35%, held by one brand, product or service, is not an indicator of strength or dominance and will not raise anti-combines concerns of government regulators.
Market shares within an industry might not exhibit a declining scale. There could be only two firms in a duopolistic market, each with 50% share; or there could be three firms in the industry each with 33% share; or 100 firms each with 1% share. The
concentration ratioof an industry is used as an indicator of the relative size of leading firms in relation to the industry as a whole. One commonly used concentration ratio is the "four-firm concentration ratio", which consists of the combined market share of the four largest firms, as a percentage, in the total industry. The higher the concentration ratio, the greater the market power of the leading firms.
Alternatively, there is the
Herfindahl index. It is a measure of the size of firms in relation to the industry and an indicator of the amount of competition among them. It is defined as the sum of the squares of the market shares of each individual firm. As such, it can range from 0 to 10,000, moving from a very large amount of very small firms to a single monopolistic producer. Decreases in the Herfindahl index generally indicate a loss of pricing power and an increase in competition, whereas increases imply the opposite.
Here are some examples of a market dominant products:
Adobe Flash[98%: NPD [http://www.macromedia.com/software/player_census/npd/ study] ] 99.3%: Millward Brown survey, conducted June 2007. cite web |url=http://www.adobe.com/products/player_census/flashplayer/ |title=Flash Player Statistics |accessdate=2007-06-18 |author= |authorlink= |date= |year= |month= |work= |publisher=Adobe Systems |pages= |archiveurl= |archivedate= |quote= ]
Adobe PhotoshopFact|date=April 2008
Microsoft Windows[ [http://www.linuxworld.com.au/index.php/id;940707233;fp;2;fpid;1 LinuxWorld ] ] [ [http://www.w3counter.com/globalstats.php W3Counter - Global Web Stats ] ] [ [http://marketshare.hitslink.com/report.aspx?qprid=8 Market share for browsers, operating systems and search engines ] ] , Microsoft OfficeFact|date=April 2008
Intelpersonal computer processors [ [http://uk.reuters.com/article/technologyNews/idUKL1730607220080718?pageNumber=2&virtualBrandChannel=0 EU files new competition charges against Intel | Technology | Reuters ] ]
CiscoEthernet switching [ [http://www.forbes.com/2004/11/17/1117automarketscan06_print.html Forbes.com: Cisco Gains Market Share In Ethernet Switching ] ]
* ARM mobile phone chips [ [http://techon.nikkeibp.co.jp/NEA/archive/200204/177680/ [Cover Story ARM CPU Core Dominates Mobile Market - Nikkei Electronics Asia - Tech-On! ] ]
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