Are There Any Open-source Aaa Video Games?

Have there been any attempts to create an open-source, AAA-style video game? Specifically, I am inquiring whether any group has engaged in distributed and decentralized large-scale game development in a fully transparent manner. This could involve either hands-on interactions with the core team or a "glass box" approach, allowing outsiders to observe the development process.

The key stipulation would be that if the game is forked and re-published, it must demonstrate a level of creative ingenuity. Additionally, for products aiming to maintain an "official look," permission would be required from the individual(s) responsible for copyright permissions within the core development team.

I am asking this because I wonder if it is feasible for individuals in traditional business culture to invest in open-source products as a norm. This could enable the establishment of stable businesses built on open-source works, without the complications associated with proprietary software. In this model, a typical user could compile the source code for a game themselves—albeit with some time investment—while others might prefer to purchase compiled binaries for convenience. This would also provide users with a more reliable support system from the core developers.

The profitability aspect could stem from publishing the software openly, rather than maintaining opaque development operations. Such an approach might also offer new developers a valuable frame of reference for understanding how professionally organized large-scale productions operate. Furthermore, an economy could emerge around the product, with individuals documenting the source code in accessible media formats, such as videos. This could lead to the creation of highly technical content on platforms like YouTube, facilitating learning opportunities for aspiring developers.

Considering the current trajectory of technology, this model might foster a less adversarial relationship with trade culture and the concept of employment. While this is likely just a fragment of what such an implementation could entail, I would appreciate any ideas or insights you might have to contribute.

*Filtered through ChatGPT, the original text was rather sloppily structured*