Microsoft, like many big businesses, has struggled with sustaining innovations versus disrupting the market, leading to stagnant share prices despite billions of dollars in profits. The company's persistence with maintaining its current course, exemplified by the Windows 7 success, has resulted in little growth and no significant impact on the share price. In contrast, Apple's willingness to disrupt its own products, such as replacing iPods with iPhones and Macbooks with iPads, has led to a more dynamic market and higher share prices. The company's focus on creating new growth beyond what is expected from existing businesses has allowed it to surprise investors and continue to drive up the share price.