They sold their "first .com domain" to some guy who… seems to be a domain squatter (although he writes a lot about not being one).
Companies that eager to make a quick buck are usually not the ones open-sourcing their stuff.
https://www.hyperion-entertainment.com/index.php/where-to-bu...
And also AmigaOS 3.2 for old 680x0 Amigas:
https://www.hyperion-entertainment.com/index.php/news/1-late...
Let's go a bit further then.
Next, open source SCOPE, NOS/VE and PLATO!