Yes, an Apple employee doing that would be stealing from Apple. But in the capitalist context, we also have entirely legal business models that I would argue are equivalent to corruption ethically. A business that chooses to sell its products or services only to a select group of customers (entirely legal) and then picks those customers not exclusively based on their finances but based on what else they can provide. Such as access to certain people, different favors, etc. That is IMO ethically questionable.

But the Soviet everyday corruption variety of retail employees reserving cheese for someone who can return favors, that particular thing is particular to a socialist economy with a scarcity of relatively basic goods.