Looking at the retro computer scene should make anyone a diehard open source fanatic, it's god awful how much retro stuff relies on a single guy happening to find an old disc in their basement and upload it to the internet, and a lot of the time that never happened and so the software is just lost forever and the only way hardware can be used is by people writing their own software completely from scratch and sharing it with others.

And of course if they then don't make it open source that's extra fun.