I don't think there could be a more powerful endorsement of Trump so far, much more than if Bezos's paper actually printed an endorsement of him (which would have been laughed at):

It's a signal of Trump as extraordinarily powerful, a stronger signal than probably anything else I've seen. That boosts his image among suppoters - remember power is what he sells - and will intimidate many, many more into complying. What journalists and business people, or any elite, will stand up to him now after Bezos and the Washington Post - probably the second most respected news organization in the country - have bent the knee. And it makes a Trump victory look more inevitable, a key selling point for anyone, but especially a populist.

When Los Angeles Times owner Patrick Soon-Shiong did the same thing recently, "The Trump campaign swiftly shared the ... story with supporters." [0]

[0] https://www.npr.org/2024/10/24/nx-s1-5163293/la-times-editor...