I think SpaceX has lots of time to get that working, since Artemis is insanely behind schedule anyway.

Further, that's a different kind of contract. NASA is paying to have something built that has never been done before. If SpaceX doesn't hit milestones in that contract, they don't get paid. They both know that.

Even further, SpaceX underbid that contract to win it. They're using some of their own money to build it, knowing they will use the tech themselves down the road.