If the rewritten project gets more successful than the original (perhaps due to corporate promotion), you have morally stolen the work of the original authors.
If you write a project from scratch without looking, this of course does not apply. But I doubt that is how Rust rewrites actually happen, the temptation is too great.
Ownership is by "moral" definition something completely arbitrary and made up.
If you work in open-source you most likely have different views on ownership than others.
By this logic, WINE is a derivative of Windows and should retain their license.
> but if they rewrite the project in rust, why _shouldn't_ they control that project? If other people choose to switch, then it's not wrong for them to move, and not wrong for to google gain control of those users.
I think the issue is the more critical projects Google controls, the more they can make decisions by fiat. Those decisions will favor Google's interests, and could sacrifice everyone else's interests in some way.
It's sort of like web browsers. My understanding is that Chrome is so dominant that Google can basically dictate HTML standards at this point, or at least effectively push them in directions that are favorable to its ad-based business.
but if they rewrite the project in rust, why _shouldn't_ they control that project? If other people choose to switch, then it's not wrong for them to move, and not wrong for to google gain control of those users.
The original project maintainers is a third party to this whole process, and i would argue, is uninvolved tbh. It is up to the users of the project to decide to trust google's rewrite (and their tendencies to abandon projects...), vs the original maintainer's version, balanced against the security aspect.