i think you need to engage seriously with the arguments they (or at least Anthropic) make for why they are building it — they feel that since it now possible, it will be built and they want to guide it in a positive direction rather than leave a vacuum for bad actors
Well they're doing a pretty poor job of guiding it in a positive direction and ethically speaking they are almost indistinguishable from the bad actors....
MY cynical take: Until the compute needs get so enormous that only governments can fund it and there is a consensus internationally, its either company A in country X or company B in country Y. And since everyone thinks THEY are the good guys the competition will continue.