Two comments:
In an era of 37 trillion deficits, we can’t afford to spend money on this kind of stuff, which is discretionary.
Second, Musk is going to realize that his dream of sending a manned mission to Mars is going to be much easier to achieve if the launch is from the moon. So, he may take care of this for us.
With the rapid improvement of robotics and AI the issue may become academic in just a few years.
Humans may no longer have to risk their lives to accomplish any space mission.