The Memphis Mafia didn’t exactly do much to help Elvis with his drug addiction and other unhealthy habits. These guys wanted to milk their affiliation with him (selling baseball caps and t-shirts) but they didn’t do that much for him when it mattered. The typical story of the typical entourage, or posse, just hangers on.
Actually they tried. For example, Red West beat up one of Elvis' dealers. Broke the guys toe and threatened him that he would break more bones much higher if he continued to sell Elvis anything. On other occasions, they would replace Elvis' pills with placebos. When Elvis found out what they were doing, he ordered them to back off.
These guys wanted to milk their affiliation with him (selling baseball caps and t-shirts)
No, that would be Col. Tom Parker. And Elvis gave the guys permission to make a buck off of his name.