If you are wondering why his parents at this point wont accept him doing Satisfy as a daily job, then please count first.
He earned 90.000 won daily with hard physical work, which with an average month's 22 workday is 1.980.000 won. He earned ~2/3rd of that in the game atm, so of course no normal and responsible parent would let him go down this path yet.
Also, it's an 8 hour job vs an 5-6 hour job.