I find it telling that iOS (iPhone/iPad) and OS X (Mac) have built-in support for Vimeo (video), Flickr?, Yahoo, Facebook, Twitter? and LinkedIn and a bunch of popular Asian based services. So I can upload any image on my iPhone or iPad or Mac to Yahoo's Flickr. I can upload any video to Vimeo. I can share a web pages or image to Facebook or Twitter or LinkedIn. But Google? NOPE!
Apple even provides a tool to integrate iCloud into Windows XP/7/8 and increased it's integration with Bing.
Interesting since Microsoft and Apple are competitors. Also interesting is that Microsoft Office now also runs on the iPad/iPhone and of course has been on the Mac for years. Siri now used Bing for search instead of Google.
The only major company left off of the sharing sheet is Google. Apparently Google gets a lot of traffic from iOS and OS X user since they have been the default search engine for some time. Apple has added DuckDuckGo ( a less creepy search engine ) to the next version of iOS and OS X and it may become the default.
I think Apple is sending a not too subtle message that CREEPY advertising driven data mining services should NOT be the future of the web. Apple is slowly squeezing Google out. If you want Google spy-bots on your devices you'll have to install them yourself[^1].
Apple has provided an extension mechanism in iOS and OS X to allow for third-parties to build their own services.