Utilities are not allowed to discriminate between customers – every customer is entitled to service on equal terms.
That is simply not true. While discrimination on the basis of race etc. is not allowed, discrimination on the basis of how a service is used is allowed, thus an ISP can ban a user who is using the service to post child porn. It is just a matter of time before the criteria for this extends to all that the likes of the racist hateful Southern Poverty Law Center deems a "hate group."
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