I am personally for Open Source. Companies come and go. Developers too. And when they go, the knowledge and source code sometimes go with them. Ope source could preserve that.
I am quite ambivalent about the prospect of open source for AmigaOS.
On the one hand, it is pretty difficult to argue against the points you make in favour of it. If nothing else, the preservation factor alone is a huge positive. Then there's the potential extra contribution that it could draw from software developers in the wider community.
I think we would need the open source project to be at least controlled by a trustworthy organisation for it to have any chance of success. You still need decision makers, even on an open source project.
But here's where we run into a big problem, I think. If history is anything to go by, it will prove very difficult to get groups of people in the community to agree on things. The development roadmap for AmigaOS would be a pretty potent source of disagreement, I think.
If that happens, you'll end up with a separate group of individuals, unhappy with the direction/progress of the current open source AmigaOS stewards, breaking off and developing their own fork.
Before you know it, we're back to an 'us vs them' issue on the two forks. Maybe an 'us vs them vs others' if there are even more forks.
You can see how this could end up quite messy quite quickly.
Do you agree with this concern?