However a bus driver refusing to refusing/threatening to not provide service to a passenger is illegal, unless in some special cases.

Apple is already somewhat classified as critical infrastructure, like via the DMA. I don't think the electricity provider will be allowed to say 'don't pass that law, or we don't provide your city with energy'. This would result in dispossession.

This might not be encoded in current law. I'm just stating it should pointing to other legal subjects doing comparable things.