We're also forgetting another reason UP won't ever be broken up - it's not big enough of a "marketing target" for a politician. In other words, how many votes would a guy get for breaking up a railroad most households don't directly deal with, other than waiting for a train at a crossing. Breaking up Microsoft, AT&T, or Standard Oil is different, as it's a big marketing target - many people are familiar with these three, and probably feel these three are ripping them off but there's nothing to be done because there isn't much competition.
It's a similar situation with Amtrak - killing Amtrak now won't really save us much money, but it's a great marketing target, as most people know what Amtrak is, and many ride Amtrak. It's a visible target, so it's in play in Washington.
The new Acela: It's not Aveliable.