> Fork is a term invented by GitHub.
No, it is not.
Also, do I get royalties for my contributions to this open source project? Since you're literally selling other people a gated license to the code I contribute, I'm wondering how this works from a legal perspective.
Amazing, isn't it? With the internet, we have this wealth of knowledge at our fingertips and yet so few use it.
And yet, you still can't believe everything you read on the Internet.
I just started this subscription recently as an experiment to see if I can make a sustainable open source project. I haven't made any money from it yet. And I haven't decided if and how we should give royalties with contributors. If I get lucky, the business model works, this topic is open for discussion among contributors.
That said, the specific arrangement in this case may be a bit strange. There's a "commercial end-user license agreement", which I'm pretty sure is not possible–unless they are the author of all the code in question, in which case they can make up as many licenses as they want.