Some republicans will never acknowledge Biden won because they

[applegrove]

need the false narrative that the election was fraudulent in order to massively upend the electoral process and suppress more black votes (and other urban and suburban votes) in the future like awarding electoral college votes according to gerrymandered districts in the state ... or some things like that. IMHO They are already plotting. They are machines. The rest of humanity is exhausted by the events of the last two weeks.

[Straw Man]

1. Also ...

... to acknowledge Biden's win now would be a tacit admission that they were lying through their teeth all along. Either that or they'd have to dress it up in some guise of "Oh, look what we found: previously undiscovered proof of the election's legitimacy ..."