When you run a carrier you're expected to be neutral. What people do with your service is not your responsibility. If the service is being used illegally then law enforcement can intervene.

When you run a community you have an obligation to pick and choose who participates. You can strive to be inclusive, but when you start to include those that seek to exclude you'll find your community being hijacked and perverted into someting that reflects the wants and needs of a tiny, dedicated, often highly motivated minority.

It's the responsibility of anyone running a community to police and weed out bad actors. I they don't the good citizens will leave and your community will be worthless. That's probably a bad thing if you've got shareholders to answer to.