Not always. For example, the Foreign Corrupt Practices Act prohibits U.S. companies from bribing foreign officials, even if the practice is accepted or prevalent in a foreign nation.[1] Just because another country has a particular policy does not mean we have to allow our companies to play along.
[1] https://en.wikipedia.org/wiki/Foreign_Corrupt_Practices_Act
Er, no; in every "free" country, trade/export restrictions are still a thing. US corporations can't sell to North Korean citizens, or even Cuban citizens, despite not being in a state of war against either. And "munitions" (e.g. what encryption algorithms used to be) can be traded hardly anywhere. Just call censorship-enabling technologies "munitions" and it neatly solves the problem of who exactly US corporations can give them to.
That regulation is only in place to protect the established players ... and to ensure the CIA decides who gets the weapons.
Nonetheless, among such regulations, designed to make private companies somewhat work for the general public interest, we can include not aiding censorship.
I guess you meant "duty" instead of "right"; and respecting the sovereignty of other nations means they can block any site they like or even internet itself if they desire, but it doesn't mean we have to allow local companies to comply with laws from those countries.
>As you note, private companies are typically free to do as they please in free countries...that's kinda the point.
That's not the point at all; lets put it this way, companies are NOT free to poison the water we drink or even poison the water of other countries drink just because their governments tell them to do so.
This nearly made me cough my lunch over my keyboard.
Countries tend to have the habit of respecting other countries sovereignty right up until they don’t, at which point they will invade and occupy the other. Or carry out a proxy war, etc.
Even that is too generous. Which country of any influence doesn’t at least a few spies getting about doing their spying. Which major players aren’t subverting the course of things in at least a handful of regions at any time.