While it's true that this the kind of "source available" license the article is talking about, other examples exist.
For instance, the source code to Epic's Unreal Engine[1] is hosted in a private GitHub repo, accessible by anyone who agrees to a clickthrough license, and free for personal, educational, and commercial use up to $1 million gross revenue, at which point royalty payments are required.
For instance, the source code to Epic's Unreal Engine[1] is hosted in a private GitHub repo, accessible by anyone who agrees to a clickthrough license, and free for personal, educational, and commercial use up to $1 million gross revenue, at which point royalty payments are required.
[1] https://www.unrealengine.com/