Reverse engineering is trivial with LLMs. If open source can't do it, that reflects badly on them.
Are you saying that people working for free on their hobbies are stupid/lazy, because they don't have enough resources to fight trillionaire megacorps, which push proprietary formats instead of internationally recognized free standards? AI can help, but what we really need is government funding.
It doesn't matter what the root cause is. If they can't do the task, they can't do the task and someone else who can do it will do it. Open source people always expect specially low standards for being open source but this isn't how the world actually works.