However, to assume that Merc, Rom, Smaug, Circle, or any of the other intermediate foundation codebases most of us use today also grant these same rights is foolish. The text of the Smaug license does not explicitly grant you the right to redistribute a derived work. And the Smaug devs hold copyright over their portion of the combined derived work, so they must either say so in their license, or grant such rights individually - as they did with myself for both FUSS and AFKMud.
I have to disagree with you samson on this point, the Diku license itself says that if you publish any part of diku mud that what you publish must be licensed under the Diku license, which ensures then that any future derivative works grant the rights of publication.
So if your published derivative work is licensed under the Diku license, then all you can do is extend on the rights or restrictions that the diku license grants, you many in no way remove rights or restrictions. So to my way of thinking, if Diku says you can publish then any derivative work inherits that right to publish by default that the work must be licensed under the diku license.
The smaug license says you must follow the Diku license, if your to follow the diku license then you have rights to publish, by exercising their rights to publish, the smaug team have by default licensed their work under the diku license and through the smaug license have added extra elements ontop of the diku license.
I hope i make sence here, cause after reading over it 3 tmes i still don't know if im making sense.
The only way another party can assume they have any rights at all is if the copyright holder provides a license detailing exactly what the party is allowed to do. In their roundabout way, the Diku authors have given their written consent to allow "publishing" which can loosely be interpreted to mean distribution of derived works.
It is only my opinion here, but i think what we might have in regards to the word PUBLICATION and also to the word PROFIT in the Diku is some funny Finish to English translation. I would be interested to see how the diku team would have wrote this license in Finish and then have a few of my Fin friends translate it back to me. Because to me it would be funny to ask a newspaper to license the artical they write about DikuMUD to be licensed under the Diku license.