We're talking about an acquisition, not the original company making the reversal.

Red Hat used to routinely open-source acquisitions. Sun also did— that's how we got OpenOffice (and by way of it, LibreOffice). StarOffice was proprietary when Sun bought it.

Unity!

Oracle ended OpenSolaris although forks continue. Nokia and friends ended OpenSymbian, no forks afaik.

Lerna, if that's major enough for you.

You keep posting this completely unsubstantiated theory.

Way back when the license changed the threads on HN had HashiCorp employees claiming the change was primarily to protect HashiCorp from the fact IBM was reselling Vault. IBM then went ahead and helped fork Vault (OpenBao).

Definitely not the case. HC leadership was totally desperate for any way to increase revenue and/or stock price. See also the announcement in a recent quarterly report that they were going to start doing share buybacks even though they are still operating at a loss.