The Biden administration released an RFP a year ago to exactly that end. IIRC, there was an $800+ million contract awarded.
Not only does Musk have a lot of power to get favors granted to him now, but I'm sure he also realizes that there could be significant backlash against him and his companies during a future administration, if his and Trump's actions turn out to be as broadly, bipartisan-ly unpopular as I'm hoping. So not only will he want to extract as much as he can from the government now, he'll want to consolidate and increase his lead over his competitors so a future administration may have no choice but to continue using SpaceX for the bulk of its needs.