>Something similar to basic Cloudflare but run as a public service by the government that is free to all might be a good thing to have.

Until the government decides your content no longer deserves protection because of your politics or religion or whatever.

This is the same problem as government "regulating" social media companies and forcing them to publish certain kinds of speech against their will, which people also seem to want. Inevitably it boils down to an end-run around the First Amendment, as it gives government direct control over speech at a far greater scale than any corporation, backed up by a monopoly on violence.

I do not think that the government needs to be the ONLY source of this public service. Cloudflare of course can still exist as a private company. The government would just provide a "free" public service to those that need it.