Friendships/family relationships and business relationships have different ends, but they are both means to an end. — baker
You are not dehumanizing your friend though to an object. A true friend is someone presumably, who you would care for their well-being and vice versa. Let's look at some other differences:
1) A friend you can leave if the friendship is no longer beneficial. Leaving does not automatically entail that you cannot survive. Businesses know they can threaten your very survival. They can dictate you act according to their
demands. If a friend demands of you and is being too demanding, you can leave without such dire hardship.
2) (Perhaps 1a) A friend is someone you are "natural" around. That is to say, you can be truly yourself without any pressures of conforming to a policy. It is the way most humans are when not pressured or molded to get a task done with incentives that will be taken away otherwise.
3) Presumably, you
want to be around your friend. In a business, often you are subject to personalities, styles of interaction, and hierarchies, that you would simply not choose otherwise. You are "stuck" until you find another "fiefdom" to migrate to (if that's an option).
4) Presumably, you aren't looked at solely because of some gain they are getting from you. Rather it is enjoying their company as a person. You are
not being taken advantage of based on your position. Going back to point 1, you do and act a certain way around employers because if you don't they will disapprove and fire you.
All of these come back to a main point which is that employers understand that employees are in a position of precariousness. That is to say, they
need the employer usually way more than the employer needs
them. Understanding this, the employer can simply dangle the possibility of termination to motivate the worker to comply with demands of the company. It is NOT a reciprocal transaction as is the case with
true friends (not friends of convenience or "friends" that are clearly predatory or abusive relationships).
So yeah, you
can make the case that friendships are "transactional" but I don't think in the same "means" that a company is doing. Your argument reminds of arguments that go like this:
Person 1: "You should eat more natural foods as they are healthy for you".
Person 2: "Oh silly goose, ALL foods are natural because they are made of compounds and atoms that are natural to the universe".
That is obviously an absurd point. Whilst true that technically all matter is "natural", that is a distinction that makes no difference. There are differences in the ways you are forced to interact in a business relationship that are not the same as friendships, and they are often because of the nature of how you are used as a means that violates Kant's second principle.
Now, that being said, to be a bit of devil's advocate, I can agree with you that ALL interactions are using people but then this would simply provide more evidence for Cabrera's point that human life ENTAILS being immoral.