In the US, the government is restricted by the First Amendment. The oversight is the courts. Censorship by private ISPs wasn't allowed when we had net neutrali

In the US, the government is restricted by the First Amendment. The oversight is the courts. Censorship by private ISPs wasn't allowed when we had net neutrality, but at the moment they can do whatever they want. If most places had competitive free markets for internet, that might be be ideal, but we basically have monopoly providers in much of the country.