(usual disclosure: I'm a Google engineer).
Those are all really bad examples.
Retiring ActiveSync for consumer accounts is not "trying to prevent Windows Phone from syncing calendar and contact data". Not even close. ActiveSync is a Microsoft-specific protocol which is so heavily protected by the patent system it requires fees. There are open equivalents for all its functionality. Perhaps if Microsoft doesn't want to implement CalDAV or CardDAV like its major competitors do and would rather its competitors pay them per-user license fees for the privilege of using a crappy syncing protocol, they should not be surprised when support for said protocol goes away. They can catch up with everyone else and support the non-licensed calendar and contact syncing protocols instead. For corporate users, well, they pay so the costs of ActiveSync can just be passed straight through.
By "hindering the development of a YouTube app" you actually mean requiring Microsoft to obey the terms of service, right? The sort of co-operation Page was talking about doesn't mean Microsoft can do whatever they want, demand whatever they want, and everyone gives it to them on a plate for nothing. It means cooperating to find a reasonable solution that works for everyone. In this case, there's already an HTML5 website Windows Phone users can access, and if WP becomes popular enough then probably Google would make a native app that follows content creators requirements and allows the site to be funded. Or maybe provide the access they need to build a proper app that does follow the ToS. After all, that's what happened with the iPhone app despite the iPhone being Android's biggest competitor (it started out written by Apple and later moved to being written by Google).
The sort of thing Microsoft does here is exactly what Larry was talking about. They must have known when they were developing the YouTube app that the features they added were not allowed - because it says so right in the YouTube ToS. So what was their goal here? Apparently to try and confuse people and try to score points when they got inevitably told to stop. And it's working on you, isn't it? It's exactly the same kind of immature behaviour they're pulling in so many other ways. This is not co-operation. It's playing politics instead of building better technology. Larry isn't the only one that's sick of it.