That person makes $60K/year from 5hours/month but you can't imitate him. It's not really time = money. He is using some kind of personal/company brand that took years to build. There is value, but it's not in the time he is putting.
Okay. An example: Spend 10 years building knowledge and reputation on some field and become really good at it. Then give a one monthly paid talk at some conferences. That goes $5K/talk. Pretty much achievable. You can even make more, depending on the experience and value you bring.
Okay. An example: Spend 10 years building knowledge and reputation on some field and become really good at it. Then give a one monthly paid talk at some conferences. That goes $5K/talk. Pretty much achievable. You can even make more, depending on the experience and value you bring.