The AI buildout and the Manhattan Project analogy

One commenter rejects the Manhattan Project analogy for an AI corporation, saying someone who leaves for a competitor gets a raise and an invitation to return. They contrast that with their claim that defectors to the Soviets were executed. A reply agrees with the workplace distinction but claims the AI buildout consumes much more of the economy than the Manhattan Project did and probably offers significantly more destructive power and economic impact than the atomic revolution.