Fourteen years ago, sergio noticed that a lot of people who bought personal computers did not know much about how to use them and frequently suffered system crashes and other aggravations. he decided he could earn a nice profit by starting a consulting business to other people overcome their computer woes. although the business struggled at first, it has experienced a good deal of success for the past five years. sergio has many satisfied customers, and the business has grown to the point where he now employs several workers. sergio's experience is an example of: