Because of a delicate power balance between Google and their partners. Even if Google thought that those are things that need to be fixed, they can't just decl

Because of a delicate power balance between Google and their partners. Even if Google thought that those are things that need to be fixed, they can't just declare "my way or highway" to their partners because the partners have alternatives. Another reason might be that Google is more realistic about what is easy and what is not easy to do. While from our perspective not upgrading everything to the latest version within minutes of new release can only be explained by criminal incompetence from everyone involved, maybe, just maybe, on planet Earth, those are caused by technical and managerial issues we're not privy to and therefore not fully capable of judging.