More and more reasons to move to the EU. The European Union Court of Justice has ruled that programming languages are not copyrightable. They ruled in favor of World Programming Limited, which was brough to court by SAS Institute over the SAS System.
There are some striking similarities between this case and the Google vs Oracle case happening here in the states. I don't think access to source code was a factor in this case as it seems to be in the Google/Oracle case, but overal the "spirit" of the case is quite similar.
You can read more about it here: http://www.zdnet.com/blog/btl/eu-court-rules-programming-languages-not-copyrightable/76076