Disney's "trust" remains on top. What media analysts, entertainment writers (especially in the Penske Media rags) and Internet trolls keep pretending is not close to reality, and never will be as long as Peltz is kept away from everything. But if he gets his way, then he'll actually make it come true.
Disney will not survive as an independent company if it's broken up back to its 1995 size. All the assets (ABC, Pixar, Lucasfilm, Marvel, Fox) are not only complementary and working well, but also protect it from a hostile takeover. In short, Peltz would bring us a return to the days of 2004, with Eisner weakened and Comcast sniffing opportunity.
The other conglomerates will never amputate arms like that. Comcast will never sell NBC. Paramount will never sell CBS. So if Disney ever sold ABC, none of the other companies will follow suit; they'll just pounce and batter Disney with their scale.
Keeping Peltz away prevents disaster.