Am I being unfair? Who, after all, is the Open Data Movement? Well it turns out there isn't one really, at least when it comes to "open data" in the sense of "open government data", which along with "open scientific data" is one of the two most common uses of the term.
"Open Data Movement" is a phrase dragged out by media-oriented personalities to cloak a private-sector initiative in the mantle of progressive politics. Along with other cyberculture terms ("hacktivism", "unconferences", "hackathons") the word "movement" suggests a countercultural grass-roots initiative for social change, but there isn't anything of the sort that I can see.
Take Tim O'Reilly, who has thrown the phrase around for some time (see here for an example from a couple of years ago). Like others who use the phrase, he sees no conflict between civic culture and corporate interests, so the Strata conferences and Open Government conferences he has run have been sponsored by major software, hardware, and computer services companies (including, I think, my employer, for whom I do not speak). Strata 2012, for example, is co-hosted by Cloudera, sponsored by EMC and MapR, and many others.
Or take the "Code for America" initiative, which uses language that is explicitly about promoting an alternative vision of how government works ("it's about citizenship and how the internet is fundamentally reshaping the way government can work", It's "a Peace Corp for geeks") and which has many well-intentioned people involved. Yet when it comes to it, there's a lot more here about making uncontroversial data available (including for commercial use) than there is about anything like challenging government on actual accountability or transparency. So it's no surprise that the list of donors includes major corporations like EMC (again), ESRI, Google, O'Reilly Media, and Microsoft.
It's not that there's necessarily anything wrong with Code for America, more that it's not a movement in any political or even cultural sense. Another member of the CfA donor list is the Omidyar Network, set up by the eBay billionaire Pierre Omidyar, and it reflects his view that private sector corporate profit-making activity and civic activity are not in tension, but complement each other.
As a result, the actual activities of this "movement" end up being to push for government subsidies of private-sector activity. It's "big society" all over again. This is the TED worldview, so it's no surprise that the recent Open Government Partnership wraps itself in noble goals such as fighting "corruption, closed doors, the consolidation of power" (see Hillary Rodham Clinton's remarks) and basks in the reflected virtue of TED fellow Walid Al-Saqaf (Open data vital for a new Yemen) when the most likely outcomes are privatisation initiatives of the kind promoted by Francis Maude.