How do entrepreneurs and small businesses contribute to the economy?

"Typical of many who catch the entrepreneurial bug, Natalie Tessler had a vision and pursued it single-mindedly. She is just one of thousands of entrepreneurs from all age groups and backgrounds. Even kids are starting businesses and high-tech firms. College graduates are shunning the corporate world to head out on their own. Downsized employees, midcareer executives, and retirees who have worked for others all their lives are forming the companies they have always wanted to own. Companies started by entrepreneurs and small-business owners make significant contributions to the U.S. and global economies. Hotbeds of innovation, these small businesses take leadership roles in technological change and the development of new goods and services. Just how important are small businesses to our economy? Table 5.1 provides insight into the role of small business in today’s economy."