Getting access to compute is cheap and unadversarial in a way that getting access to fissile material is not.
High-performance compute is mostly limited by power/energy use these days, so if your needs are large enough (which they are, if you’re doing things like simulating a human brain—whoops sorry, I meant a “neural network!”—in order to achieve ‘AGI’ and perhaps superintelligence), getting access to compute requires getting access to fissile material. (Or comparable sources of energy, anyway.)
High-performance compute is mostly limited by power/energy use these days, so if your needs are large enough (which they are, if you’re doing things like simulating a human brain—whoops sorry, I meant a “neural network!”—in order to achieve ‘AGI’ and perhaps superintelligence), getting access to compute requires getting access to fissile material. (Or comparable sources of energy, anyway.)