(IANAL)

Here's an example where an MIT-licensed project switched to APGL recently without needing to contact contributors[0].

Interestingly, the MIT license explicitly names and allows sublicensing, but the 2-BSD and 0-BSD do not call it out explicitly.

tldrlegal[1] seems to think 0-BSD allows sublicensing, but doesn't mention it on the page for 2-BSD[2]. I'm not sure what to make of that.

[0]: https://github.com/immich-app/immich/discussions/7023#discus... [1]: https://www.tldrlegal.com/license/bsd-0-clause-license [2]: https://www.tldrlegal.com/license/bsd-2-clause-license-freeb...