> A claim I've heard is that the for-profit company has the exclusive commercial license (along with the right to grant sub-licenses).
That sounds about right, and is what's written on the WordPress Foundation's trademark page [1]:
> If you would like to use the WordPress trademark commercially, please contact Automattic, they have the exclusive license. Their only sub-licensee is Newfold.
I read something different [2] while reading up on this whole debacle:
> The WordPress Foundation was launched in January 2010. Automattic transferred the trademarks later that year in September. As part of the transfer, Automattic was granted use of WordPress for WordPress.com, but not for any future domains. Matt was granted a license for WordPress.org and WordPress.net.