One of the reasons why the original OS/2 source wasn't made available by IBM was that there are a lot of 3rd party libraries in it. Many from companies that no

One of the reasons why the original OS/2 source wasn't made available by IBM was that there are a lot of 3rd party libraries in it. Many from companies that no longer exist, or firms that have been acquired several times, so it's just too hard to get the release signatures.