Military hardware is big business because governments want to ensure survival of their nation. The same will happen with carbon removal. The longer we fail to reduce emissions the bigger the boom will be.
A key difference there is that paying for your own military directly benefits your interests, whereas countries can engage in a race to the bottom with carbon removal wherein they rely on others to shoulder the burden while still enjoying the benefits.
For the USSR, the cold war arms race ended at the bottom. Not sure it benefited them in any way.
It’s the ultimate tragedy of the commons.
If that theory were panning out, NYC would be building carbon capture plants instead of sea walls.