Larry Ellison is already a major stakeholder in CBS and Paramount. Now CNN, HBO and a major share of TikTok are in his sights. If all goes as anticipated, this tech billionaire, already one of the richest men in the world and a founder of Oracle, is poised, at 81, to become one of the most powerful media and entertainment moguls America has ever seen.

For the rest of us, the effect of Mr. Ellison’s gambit could be every bit as consequential, if not more so, than what happened a generation ago when Rupert Murdoch brought his brand of Down Under snark and cynicism to create what has become Fox News, intensifying our political polarization.

Mr. Ellison’s expected incursion into Hollywood and Big Media, if successful, could also go well beyond what other tech moguls like Jeff Bezos and Marc

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