Opensource is opensource: CockroachDB Core up until Nov 24, 2024 is, and not afterward. Anyone who wants to fork it can do so. Mind you this will be a hard fork as there's no way to keep in sync with their enterprise product.
What you say is true in that you shouldn't view a VC backed opensource offering as 'permanently' opensource by the same group.
What you say is true in that you shouldn't view a VC backed opensource offering as 'permanently' opensource by the same group.