I understand your concern, but I think the question of governments creating space-based beamed weapons platforms is quite independent of the question of orbital power transmission. I'm quite sure that governments are working on such technologies and will eventually build them when they become feasible. I don't think that developing orbital power stations will significantly advance that.
In a broader sense, though, I think the attitude you're expressing is not a good one. There are many technologies that benefit our society but that can be used to wage war more efficiently and effectively. Be it internal combustion engines, airplanes, ships, rockets, nuclear fission, modern logistics, computers, or even antibiotics. Suppressing such technologies is not, in my opinion, the correct solutionn to the problem of their misuse.