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In general the problem in the game industry isn't that people don't know better ways to structure their code, but that they are under extreme pressure to ship and get absolutely no time to refactor.

Between GDC presentations and published computer graphics papers, the game industry is actually quite open about sharing its best ideas.

Or SIGGRAPH for that matter.

I don't think EA has any tech that's sufficiently advanced over something like Unreal Engine, which is already source available. It's at least not perceptible in the games they publish.

Maybe I’m being naïve, but that seems naïve. EA is a very well-funded and complex company with a lot of fingers in a lot of gaming pies. To assume that none of their code is cutting edge or advanced seems unlikely

I could be entirely wrong though

When you consider how prone to patents the gaming industry can be, (and the fact that this is EA), I would be very careful before reusing concepts from here.