I’m under the impression they are (were?) allies of convenience and didn’t have a lot of love for each other.

This goes for almost all of the loosely affiliated right-wing organizations currently under the umbrella of the administration. It’s our best bet for the future; drive a wedge between them, make them fight each other rather than us. Use their own tactics against them. Cfr the Trump-Musk feud. There’ll be others. There’s also the succession war in Murdoch’s circle. He’s still fighting against his sons (who may legitimately be even more batshit than he is). It must be so frustrating for someone like him to ‘build an empire’ and see it being divided before their death.

Likely whoever is leaking the documents reached out to the WSJ since they’d have more cred in right wing circles. If the WSJ buried it, then the leaker would take it to another newspaper the story would still go out. Only difference would be the WSJ and Rupert Murdoch would be complicit in Trump’s cover up.

So it’s probably less Murdoch betraying Trump and more not wanting to go down with him. Plus it sells newspapers and Murdoch likes making money more than anything else.

The Orange Poo Smear doesn’t have friends. He’s a narcissist. That’s very thin ice for any type of relationship. As we saw with nearly his entire first term administration, people that get to know him learn to hate him quickly. This goes double for billionaires like Murdoch who are used to always getting their way.