Much more likely is that prevention is not enough of an incentive to a person who is probably not going to contract a disease, compared to corrective measures once that person falls sick. Although there are exceptions, it's human nature to favor correction over prevention, even if that is illogical. The medical and regulatory systems reflect this fact.
Prevention is a much harder sell to many people. It usually requires more effort. Think exercise and good diet. Consider the percentage of people that are overweight or obese, 73% according to the CDC in 2017-2018.
Eating a healthy diet is preventative for a whole host of maladies. Many people would rather eat things that taste good, are quick and cheap. The things that are possibly prevented are in the distance. Pizza vs salads. Fish vs steak etc.
Diseases are clearly in front of someone that has them. Something that needs action for a well defined result. Prevention is not so clear which means motivation is harder to come by.
2-73 may turn out tp be a preventative drug. It will be easy to take like a daily vitamin. Given the size of the vitamin and supplement industry in the US it looks like people will spend money on pills and such. $35.6 to $46 billion in the US in 2020.
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