It wouldn't surprise me if a Western government (probably the UK's) considers introducing legislation to require exactly this in the not-too-distant future, most likely under the guise of preventing the spread of extremist propaganda.
If they do, companies like Facebook and YouTube will face a choice between acceding to the new regulation or incurring punitive fines. Guess which option most of them will choose?
The only way we can prevent George Orwell's vision from becoming a reality is if we build a more decentralised web. However, that also threatens the walled gardens' revenue streams.