You want to know what involves no real work. Crypto mining. It is about capital investment, and the ROI you receive. If you pay someone to maintain the miners, is it all their Bitcoin?
When you pay someone to maintain the miners that is you paying them for a service. The hardware is what does the work of mining, not the people maintaining the hardware.
According to communism that service is the only labour going on. So that one guy can claim all the miners are his according to you.
This is like paying someone to clean your house or mow lawn, you pay for a service. Capitalism is when someone has cleaning business, sends other people to clean and they take profits.
