Uber was founded in 2009 in San Francisco and has since expanded internationally, offering ridesharing, food delivery, and other services through their app. They have faced challenges from taxes, risks for drivers, and regulatory issues in new markets. Uber has been successful by identifying gaps in the taxi market, adopting new technology, embracing marketing, and leveraging their user base. In 2018, Uber reported over $11 billion in revenue and $1.8 billion in net income, demonstrating their profitability.