Facebook Pulling an Open Social?

From “JavaScript Client Library for Facebook API“:

This JavaScript client library allows you to make Facebook API calls from any web site and makes it easy to create Ajax Facebook applications. Since the library does not require any server-side code on your server, you can now create a Facebook application that can be hosted on any web site that serves static HTML.

Now let’s compare this to the Open Social API description:

OpenSocial provides a common set of APIs for social applications across multiple websites. With standard JavaScript and HTML, developers can create apps that access a social network’s friends and update feeds.

Is it just me or are others also thinking this is a missed opportunity for FB to take part in Open Social?

On the other hand, it could also lead to just that with what could be a simple wrapper to interconnect both ecosystems. That’s if FB decides not to go that way on their own and doesn’t expressly block such development through technical or legal means.