Even before he closed a deal to combine his company with a much bigger one, David Ellison was already plotting to do it again. Once his Skydance Media took control of Paramount PSKY 20.84%increase; green up pointing triangle, he turned his attention to a Hollywood icon, launching an audacious takeover bid for Warner Bros. Discovery WBD -2.19%decrease; red down pointing triangle that would give the Ellison family control of a sprawling media empire.