Comment by pgorczak

OTOH if you're a private business, refusing service to someone can be a way to express your political opinion. It's easy to call out injustice and oppression for many categories (race, gender, ...) but that case is harder to make for categories like "political ideology that actually favors oppression".

Of course this should not result in human rights violations and being restricted from communicating your beliefs to the world is one of them. Especially in infrastructure, we rely on private companies to fulfill basic needs that are protected by human rights.

If your infrastructure company is huge and as powerful as a public institution, and is able to single-handedly mess with people's human rights, you should of course not be allowed to have a political agenda. Not selling cakes to Nazis in your corner shop is something completely different.