The document discusses major tech companies including Microsoft, Google, Apple, and examples of successful startups that were later acquired by larger firms. It notes that Microsoft owns Windows, Office, Skype and previously owned Nokia, while Google has search, apps, Android, YouTube and the Nexus line. Apple is known for its aesthetic focus and selling a lifestyle through products like Mac, iPhone and services like iOS. Examples of acquired startups include Skype, aQuantive and Minecraft. The document provides references to articles about major tech company acquisitions and comparisons between Microsoft and Google.