Well, as Automattic expands, not all of the people it employs are going to have a background in open-source software. They're probably forced to agree to the coolness of the concept in order to get hired, but that doesn't mean it's something to which they're personally committed, or even something that they think about much.

I wouldn't say it's inevitable that Automattic's commitment to open-source gets watered down the more mainstream they become, but it's certainly something the community should continue to watch out for.