Makes sense. I was coming at it from a taxation perspective rather than the "we're shutting you down" angle. We tax plenty of things that have societal harm - cigarettes, alcohol, etc. Speech is definitely too slippery a concept though.
But what about reach? Could we theoretically tax businesses based on the volume of people their content reaches, thus bringing in public revenue and/or disincentivizing:
- virality for the sake of ad impressions
- too-large (social) media networks
I'm sure it'd be phenomenally difficult to measure, but easier to pin down than arbitrary speech.