There is no cure because there is no "early detection". By the time of current clinical diagnosis (when symptoms appear), the disease has progressed to advanced stages and it's too late for any effective treatment. Our goal is to help pharma companies develop novel drug candidates that can potentially cure the disease "if detected early using our technology". Also, life style modifications are known to delay the symptoms. So knowing is always the best.
I think the general consensus is that by the time you're 75 and symptomatic things have already been going downhill for decades and it's unlikely that much can be done to stop or halt the disease. Thus, while there are no proven treatments at the moment, the candidates more likely to succeed are those that attack the disease process early. In that light, early detection is extremely helpful.