Knowing Jared Isaacman, he won't let MSR die without a fight. It wouldn't shock me to see NASA consider Rocket Lab's MSR proposal; they had submitted a pretty affordable proposal some time ago.
Isaacman definitely likes scientific missions but was skeptical of MSR, he thinks we will have a manned mission to Mars by the late 2030s so the payoff was not there given the extremely long timeline and high costs.
And I mean I agree, for that much money we should be doing missions to Europa instead.
