Unlike many business support programs, business incubators do not serve all businesses. Entrepreneurs wishing to participate in a business incubation program must apply for admission. Acceptance criteria vary from program to program, but as a general rule, only those with feasible business ideas and a viable business plan are admitted.  It is this factor that makes it difficult to compare the success rates of incubation firms with general survival statistics.  The US-based International Business Innovation Association estimates that there are about 7,000 incubators worldwide. A study funded by the European Commission in 2002 identified around 900 incubation environments in Western Europe.  In October 2006, North America had more than 1400 incubators, compared to only 12 in 1980. Her Majesty`s Department of Finance identified approximately 25 incubation environments in Britain in 1997; In 2005, UKBI identified around 270 incubation environments across the country. In 2005, North American incubation programs supported more than 27,000 companies that employed more than 100,000 workers and had annual sales of $17 billion.  An example of a specialized type of incubator is a bio-incubator. Bioincubators specialize in supporting startups based on life science. Entrepreneurs with feasible projects in the life sciences are selected and admitted to these programs.
Business incubation programs are often sponsored by private companies or local institutions and public institutions such as universities and universities. Their goal is to create and develop start-ups by providing them with the necessary support as well as financial and technical services. According to the National Business Incubation Association, there are about 900 incubators throughout the country. A business incubator is a business that helps new businesses and startups grow by offering services such as management training or offices.  The National Business Incubation Association (NBIA) defines business incubators as a catalyst for regional or national economic development. NBIA classifies its members` incubators according to the following five types of incubators: academic institutions; not-for-profit development corporations; for-profit real estate development projects; Venture capital firms and the combination of those mentioned above.  Many for-profit or “private” incubation programs were launched in the late 1990s by investors and other for-profit operators, who tried to quickly incunize companies and make significant profits. At that time, the NBIA estimated that nearly 30% of incubation programs were for-profit businesses. However, following the bankruptcy of dotcom, many of these programs were closed. In the 2002 State of the Business Incubation survey, only 16% of the responding incubators were for-profit programs. Until SOI 2006, only 6% of respondents were profit-oriented.
 About one-third of business incubation programs are sponsored by economic development organizations. . . .