I have to agree with @Gabriel - he still has a ton of money available to him. Those "legal defense funds" and "election recount" bullshit funds have him hundreds of millions at his disposal. His net worth might dog shit, but he still has access to serious cash.
Plus - he hasn't launched his cable news network yet. And that is potentially worth $1B/yr in revenue.
I agree with you that the GOP is definitely hoping the Dems clean up the mess though - McConnell even said as much when he mentioned Trump's actions re Jan 6 should be investigated.