Some context from Matt Levine [0] as to what was different prior to this change.
(TL;DR, but please correct me if I'm wrong: it was previously backstopped by Ellison's revocable trust. Ellison could theoretically clear out the revocable trust at any time, and leave WBD high and dry. Now that it is backstopped by Ellison himself, there is no such worry.)
[0]: https://www.bloomberg.com/opinion/newsletters/2025-12-17/war...