This is a classic psychological maneuver known as the “Prisoner’s Dilemma” , where waiting to confess allows your co-conspirators to screw you over.
The dozens of low-paid inner city lowlifes that they hired for the grunt work on this fraud would be crawling all over each other to confess first.
Another trick he could have done would have been getting FISA warrants for wiretaps on leading democrat leaders and fixers prior to making this speech.
He could have leaked that he was going to concede, and the MSM networks would have gleefully carried his speech live.
Then after he surprises them with the real speech, he has a small group of loyal NSA guys capture the incriminating phone calls between the members of the conspiracy.
Then he could have posted the recordings to Rumble. Ha ha!
He would have had to make extra, extra sure that the FISA warrants were not leaked to the dems, though.