The first amendment isn't a suicide pact, and foreign corporations were never covered by it.

It's not a 'suicide pact', it's a clear commitment that the government will not ban speech it finds inconvenient.

It's not done a great job of living up to that promise.

Americans still have free speech. There are many other platforms to use. Foreign governments never have had free speech rights and I doubt most people support them having those rights.

> There are many other platforms to use.

That will promptly proceed to bury whatever the government tells them to bury.