Can an Open Source Project Be Acquired?

prostoalex writes "Can an open source project be acquired? ZDNet's Between The Lines says yes, one just did. Software startup JasperSoft acquired Sourceforge-based project JasperReports, which involved acquiring the copyrights and hiring the lead developer for the project." I guess the point he tries to make is that the new corporate overloads can essentially have a free and non-free version of the code, and more or less orphan the free version. The problem of course is that if the non-free version gets good, others will simply fork.