(L-R) Lachlan Murdoch, Reid Hoffman, Donald Trump, Jeff Bezos and Elon Musk

While the Murdochs were busy celebrating the 60th anniversary of The Australian, there was bad news over in their corporate US home: Democrat billionaire Reid Hoffman was buying into defamation plaintiff Smartmatic, ensuring the election tech company has the money to sustain its multibillion-dollar writ against Fox News.

It’s another front in the under-reported business side of the US culture wars: the battle to set the political agenda through control over corporate media.

But in the lead-up to this year’s US presidential election, most of the 1,000-odd billionaires in America are — like the Republican Party itself — coalescing