Someone asked that question and is building 100x cheaper rockets. Soon to be 1000x cheaper.
They got there by solving some hard problems over multiple decades by understanding the domain and the difficulties in it. They didn't start by saying "Why aren't rockets 1000* cheaper?" They started by saying "What happens if we solve these problems?" and ended up with cheaper rockets. In another domain they might have had a different outcome, or failed to solve the problems.
I can agree with that but also SpaceX absolutely started with the question "Why aren't rockets cheaper". Thus followed resuability with an question "Why are we building single use Rockets?". Either way, we should question all of this. The entire house of Nuclear industry is probably filled with bureacratic termites.
Literally everything needs to be questioned. We can do that with humbleness and without arrogance.
Last I checked, we are on a tech forum known for starting companies.