Assuming an advanced civilization, the main limiting factor for the viable commercial use of nuclear energy would be the abundance of radioactive elements in the planet. During the formation of the planet, its mass will have an effect on which elements get captured. Unfortunately, Wikipedia isn't helpful on the specifics of planet mass vs. planet composition, but we know it depends on the composition of the protoplanetary nebula, which depends on the type of star. Too many factors.
Nitpick: It wouldn't have to be commercial use of nuclear energy. Even if we're limited to human institutions, it could be governmental use, and I have a notion that religion might be the best sort of institution for getting people off the planet. Religions have a potential for big, long term projects that don't make practical sense.
Thanks for looking into the question of planetary mass and getting off the planet-- once the question occurred to me, it exploded into a lot of additional questions, and we haven't even gotten to whether planetary mass might have an effect on the evolution of life.
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