What is and example of capitalism

My grandfather really wanted to own his own business. So between 1915 and 1920, he and my grandmother saved money and saved money. They finally found a commercial laundry he was interested in, and in 1920, he bought it, and they and my mother (age 1) moved to northern Nevada. He built that business and did well, even through the Depression. They didn't become rich, but he made good enough money to support his family and be a good, independent business owner.

http://en.wikipedia.org/wiki/Capitalism