No, they don't. They own the game data, and the original game engine. They don't own the reimplemented Open Source game engine.
OpenTTD did not have to do anything here. It sounds like they had a very positive interaction with Atari, in which Atari is providing them with some support and collaboration, and in exchange for that, OpenTTD agreed to formalize the requirement for "you need to own the original game data" by having people on game stores purchase the original game through them before getting OpenTTD through them.
That seems like a pretty reasonable approach. It should be held up as a good model for collaboration. But it shouldn't be treated as "they have every right to [demand a] cease and desist".
> Thing is, they own it.
No, they don't. They own the game data, and the original game engine. They don't own the reimplemented Open Source game engine.
OpenTTD did not have to do anything here. It sounds like they had a very positive interaction with Atari, in which Atari is providing them with some support and collaboration, and in exchange for that, OpenTTD agreed to formalize the requirement for "you need to own the original game data" by having people on game stores purchase the original game through them before getting OpenTTD through them.
That seems like a pretty reasonable approach. It should be held up as a good model for collaboration. But it shouldn't be treated as "they have every right to [demand a] cease and desist".