The difference is that the author is implicitly assuming that you've got a business that requires your active involvement to keep going.
If the business requires 0 energy from you, and makes money, then his point becomes much less relevant. But most of the businesses in question are not like that. You have paperwork to keep them going, decisions to make, customers to serve...
If the business requires 0 energy from you, and makes money, then his point becomes much less relevant. But most of the businesses in question are not like that. You have paperwork to keep them going, decisions to make, customers to serve...