Tim O'Reilly discusses the evolution of the internet and mobile technologies as platforms for applications, emphasizing the importance of creating multimodal systems that utilize both hardware and software to enhance user experience. He highlights successful examples like Square and Uber, which leverage data and network effects to improve workflows and provide more value to customers than they capture for themselves. O'Reilly argues for the necessity of idealism in business, advocating that creating value for a community ecosystem is fundamental to fostering innovation and addressing societal challenges.