Google co-founder Larry Page followed the playbook of Warren Buffett -- one of his longtime heroes. Justin Sullivan, Getty Images When Google went public in 2004, co-founders Larry Page and Sergey Brin titled their letter to potential shareholders "An Owner's Manual" -- an homage to the booklet Warren Buffett, the iconic leader of the conglomerate Berkshire Hathaway, gave to shareholders of his company.Now, more than 10 years later, Google is taking another page from Buffett's book: A massive restructuring that turns the company into a Berkshire-like empire. Page announced Monday that the leaders of Google will instead become the brain trust of a new parent company, called Alphabet. The new entity will oversee a collection of companies, including Google, as well as more nascent businesses including Nest, its smart-home device company, and Calico, a research company focused on human aging. Berkshire Hathaway runs much the same way: It owns companies like Geico and Dairy Queen and has minority stakes in Coca-Cola and American Express.Scott Devitt, an analyst from the investment bank Stifel, was more explicit when he wrote a note to investors: "The Berkshire Hathaway of the Internet emerges."