Also, regarding the marketplace surrounding WordPress, WooThemes distribute their themes under the GPL and per Andrew Warner's interview with co-founder Adii Pienaar (http://mixergy.com/woothemes-adriaan-pienaar/) they make $2+ million a year and have had some of their code incorporated back into WordPress by Automattic. This should assuage any fears about GPL themes being commercially viable and of Automattic taking a dislike to others making money off of WordPress.
In a hurry, not enough skills, buy a theme. Skilled with the time to make your own, then roll your own.
You have a choice, you are not compelled to pay for a theme if you don't want to. The software will continue to work regardless.
Unless there is some kind of legal stalking horse that could affect the GPL, I don't see the point of all the fuss.
I use both Wordpress and Joomla and I see the same kind of thriving ecosystem around both projects. Commercial and non-commercial plugins and themes for both. Seems like a good thing to me and I don't see why it has to be an either/or situation.
If I am missing something then I would like to hear it.
I think it's unlikely they'll do anything about this as legal action would be detrimental to their community; meaning that this won't be decided unless someone who receives a non-GPL'd theme contests it. This doesn't preclude Automattic/Matt from stating their view and raising a bit of a fuss as you put it in the interim.
To be clear - I'm neither a fan of the GPL, a lawyer or a WordPress user so I don't know whether Automattic is in the right and I'm indifferent as to whether or not they are.
http://wordpress.org/extend/themes/commercial/
All are GPL.
I asked a legitimate question, which given the fact y'all want to be millionaires selling software deserves an actual response.