He should hold a counter event. Invite everybody.
well technically, if we reach the point where the presidency is going to be “legally” transferred to Biden, then Trump’s only realistic option at that point is for Trump to have hundreds of thousands of followers actually there in DC with him to do a hostile take over of the Capitol building and for Trump to declare war.
or else it is president Biden and Trump joins the lists of ex-presidents as the greatest country ever on earth avalanches down a steep mountain. 2021 could be worse than 2020