They would also need to protect all this stuff spread globally and into the space. No government will be able to do that - like we've already seen with the datacenters being hit in the Gulf states. Company like AMZN will have all the components for the most modern weapon system - global autonomous drone offense and defense network with the space component (or imagine a 1 GW datacenter in space temporarily rerouting its power into a laser or a microwave effector 80-ies StarWars style :) plus de-facto global intelligence network that each of these companies have, and thus will have and will be able to better protect themselves. Those large BigTechs will unavoidably have to move into defense, for themselves and as-a-service for smaller transnationals.