I agree with the Facebook and Apple analogies. Any brand that relies on being 'cool' is always at risk from the next big thing. However, I think Google and Ford are at opposite ends of the business spectrum. Ford's success was based on standardised products to keep costs low and generate volume sales. Their Japanese competitors innovated, diversified, offered choice and developed a more efficient manufacturing process. Ford stuck with a standard product in a single market and suffered as a result. Google, on the other hand, is always attempting to innovate, enter and even create new markets. I think the question for Google is whether their pace of innovation is sustainable.