'The Badger' has it right...
Adobe, like IBM want a free lunch from the Open Source Community.
If we look at IBM's licensing for Eclipse, they are free to use whatever is created as part of their commercial products based on Eclipse code. (Rational Application Developer).
If we look at IBM's other open source initiative Cloudscape now released as Derby or Sun's JavaDB, the main supporters of the open source work are contributors of Sun and IBM. (I think those from IBM have since moved on and most of the support for Derby is coming from Sun developers.)
The article is spot on and it goes to show the issues with adopting certain open source projects or tools. Sorry while I am a big fan of Open Source, I realize that certain applications that are in the Open Source world do not match their commercial counterparts.