This problem solves itself in anarchism because barriers to becoming the capitalist employer are removed. Therefore the capitalist pig can't pay his workers too little or they set up in competition to him. Employee exploitation is only a problem in statist systems.
It's in the capital holders' self-interest to create barriers to keep wages low and prevent the working class from revolting.
I don't think you have any say in what Adam "ought" to do with his basement and property.
If not, he needs to do something else with his money.
*sigh*
Whose money is it again?
Adam's, of course. And with it he can chose to exploit, cooperate, or keep to himself. I encourage the hypothetical Adam, and everyone, especially us bitcoin pioneers, to avoid exploitation and cooperate.