This is a completely bipartisan aligned issue. Trump's administration has basically said that Biden's antitrust enforcement is the one thing they did right (in their opinion). These investigations started under Trump 1, continued under Biden, and will likely be successfully enforced under Trump 2.

There's a lot of reason big corps were trying to get Harris to agree to fire Lina Khan in exchange for support: The only way they get out of this is a bribe. And we've already seen Trump is both happy to take the bribe... and still punish you anyways.