He shouldve used her helplessness to get her to pledge her loyalty to him. In her eyes, investing so much when everyone else turned their back would make him a Saint. I wouldn't have even phrased it as placing orders with her but investing in her to save her.
I appreciate MC not acting like a snobby rich know it all where he comes and educates from whom he learned, instead tries to develop good relationship of equal standards with them. It's annoying to see characters misuse this power for their benefit at cost of false benefit to other person