I don't see how any of this could be true considering IBM is also heavily involved in OpenTofu (and did so first)
If you're an enterprise customer, do you want your enterprise deployments on a company that knowingly does two near-identical implementations, and can't seem to decide on which one to favor?
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.
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).