What pleasure the networks must have taken when they cut off President Trump in mid-rant. For nearly five years, he has compelled them to broadcast his barrages of bluster. Now, as Biden staggers towards 270 — Electoral College votes, that is, not years of age ­— with the grace and speed of a laminated sloth, Trump’s enemies — and competitors, for that is what he reduced the media to — dare to approach the tottering colossus.