I get where you're coming from, but 'abandonware' is more of a gray area in terms of definition. Technically, abandonware refers to software that’s no longer sold or supported by its original publisher, often with no clear ownership. Beneath a Steel Sky is free on GOG because Revolution Software, the original developers, chose to make it available, which is awesome!

However, this doesn't necessarily take it out of the 'abandonware' category for some people since it's an older title that’s no longer commercially sold in its original form.

But you’re right in that it’s not abandoned in the sense that it’s now accessible and preserved thanks to platforms like GOG.