Health,
1.) You are making up facts. Saying that the disease would have been easy to control on the early 8s does not make it so. Once a virus is circulating in a population for over a decade there is practically no way to figure out how many people had been exposed over that period and isolate them. How could you know that there was only a handful cases after the disease had been circulating for probably 30 years before anyone recognized it ?!
2.) You aren’t addressing my point here. If all countries on earth don’t do a quarantine at once it won’t help for the reasons i wrote above