Nobody knows how far the derived work clause of the GPL would actually reach. Staking your future business to a legal gamble isn't a move many people are willing to make without a large resulting benefit, and dtrace simply isn't perceived as a sufficiently large benefit. It's perfectly rational reasoning.
Copyright © 2017, Eklektix, Inc.
Comments and public postings are copyrighted by their creators.
Linux is a registered trademark of Linus Torvalds