I used to think like you do, but what changed my mind was that I tried to consider whether a hands-off approach will maximize total freedom.
If, by regulating the way people do business, we can increase total freedom in the world, I think that it's a worthwhile exchange. The way we do business is already regulated, and is one of the powers that we explicitly grant the government in the constitution.
The way I see it, forcing social platforms to accept free speech is really just a commercial regulation, and not a speech regulation. After all, we all understand that this post doesn't reflect the opinions of YC, and thus forcing YC to accept this post doesn't restrict anyone's freedom of speech.
