Do you think it might just slightly disingenuous to compare your garage to for profit services with users reaching into the billions, far surpassing an influence and degree of control over a group of people far larger than any individual country? The scope and scale of an issue dramatically changes its societal impact which in turn shapes the necessity of managing it should that societal impact turn negative.

Imagine Facebook and Google together decided to go completely partisan and support one candidate or another so much as they possibly could. They could present a huge chunk of the world's population with an entirely false reality. That power is something that should be very disconcerting in a democracy. If this were able to be put into effect, and prove workable, companies like Facebook and Google could effectively silently overthrow any democratic government - replacing them with the puppets of their choosing.