Also, let's not forget that Google's core products push the web (and technology) forward, whereas Microsoft is primarily enterprise-focused. Since R&D is define

Also, let's not forget that Google's core products push the web (and technology) forward, whereas Microsoft is primarily enterprise-focused. Since R&D is defined as the development of new products and creating new knowledge, Microsoft would have to spend approximately the equivalent of Google's entire $30bn budget to be operating at the same frontier.