Re: It is unclear what President Trump hopes to achieve
As usual: Follow The Money.
If he concedes, the various nuisance lawsuits are unlikely to be viewed with favor. No Lawsuits, no fundraising for the lawsuits. IIRC, much of the money raised to pursue the lawsuits is actually going to repay his campaign expenses. That income stream would stop, and he might have to repay his various creditors with his own money, if he has any.
It occurs to me that this gives his creditors a good reason to bang the drum (or rattle the can) as well.
BTW the "We build the wall" scammers who were recently caught apparently had a similar moral compass:
https://nypost.com/2020/11/07/indicted-we-build-the-wall-founder-raising-money-for-legal-fees/
(Note to non-US folks, the New Your Post "has a different viewpoint" than the New York Times or Washington Post. FYI)