The workers create all the wealth and do all the work. The heirs who own the controlling stake in a big company like Siemens do not work, but expropriate surplus labor time doing work.
You have the workers who do all the work and create all the wealth on one end, and the heirs who parasitically expropriate the worker's surplus time on the other. It's obvious to those of us who work who the "argument" is against.