Android and Siri. Android does well, yes, but Google's financial success has not yet been shown to be correlated with Android shipments (look at the stock performance over the last two years for evidence). In some interesting instances competitors (Baidu and Amazon) have gutted Android to be used against them. Every query that is performed on Siri is routed to services that are NOT search, which is where Google makes its money. Why Google would invest money in implementing mobile services that route computing away from the web is beyond me. It isn't in their interest. Joe Hewitt made this observation before too. So while yes, Google might be technically capable of adding voice assistant, it isn't clear how that leads to increased profits for them. Feature parity is the wrong way to think about the Apple Google relationship.