Lets assume it would be possible to nationalize Google, Facebook and Amazon. But by whom? US government? So a nation should run a global company in everyone's

Lets assume it would be possible to nationalize Google, Facebook and Amazon. But by whom? US government? So a nation should run a global company in everyone's interest? Everyone as in the entire population of the world? Why would I as a non-US-person use a US government system? Should I then as a non-US-person have a say in how the US run these companies? This does not make sense. I guess next article from Guardian will be like 'We Need to build a global government'.