I don’t want to believe there was any nefarious reason Duncan died or wasn’t treated like anyone else in his condition. His treatment was very delayed, and there were other factors like no ZMapp and no matching blood type. It sounds like the hospital staff did everything humanly possible to save his life.
It may be that the sooner this disease is caught, under competent medical treatment, the better your chances to survive.
However, it is true that had he survived, the floodgates would probably have opened to sick people. They’ve already opened anyway.
If that is true, why did he not object strongly when Dr Feelgood at Texas Presbyterian sent him on his way with a less than worthless antibiotic prescription? Why did he object when his stepdaughter Youngor Jallah told him she was going to call an ambulance after taking his temperature (102°)?
Fact is, he got his visa (thanks, Lurch!) and his ticket well before his exposure to Ebola. So much for your theory about coming here to get treated. And the family of the Ebola patient he handled flat-out lied about the nature of their daughter's condition. We know this from the cab driver, Jiminez Grugbaye. Being on the right side of the bell curve, Grugbaye, considering what he had seen, fumigated his cab twice and visited a clinic. Hopefully, he's still OK.
Duncan was not so smart.