Facebook, for example, has been working to fashion its own variant of Android for smartphones. Executives at the social network are unhappy that Google gets to review Facebook's tweaks to Android, say two people who weren't comfortable being named talking about the business. Google has also tried to hold up the release of Verizon (VZ) Android devices that make use of Microsoft's (MSFT) rival Bing search engine, according to two people familiar with the discussions.
With Google being direct competitors with Facebook and Microsoft in the online space, they have a lot to gain by knowing their competitor's plans early/by being able to limit their influence.