Earlier quoted context omitted.
It might also be a meeting place for conspirators to plan crimes.
So are bars. Should the electric company deny service to biker bars?
So if the biker bars are distributing child porn, or illegal drugs or guns, or using it as a place for conspiracy terrorism, then yeah, I say yes those corporations serving said bar should have a say. Particularly if the biker bar, e.g., violated the company's Christian morals.
More importantly, this is supported by case law, today.
The decisions of who a business chooses as it's customer is actively being challenged by conservatives in this country. See the Masterpiece Cakeshop ruling. In this case the decision was overturned on religious grounds.
https://en.wikipedia.org/wiki/Masterpiece_Cakeshop_v._Colora...
I would bet a significant amount that if an electric company didn't want to serve a biker bar on religious grounds (particularly if there was active criminal activity), they probably would get away with it.
The last time I checked the constitution there wasn't a right to internet or electric or phone service. There was a right for religious beliefs, though.