Even if it doesn't, there's a lot more profit in advertising than insulin. The economy would probably function better if diabetes patients were left untreated and die, since the cost saving estimates are quite enormous.
> today’s diabetes patients are tomorrows alzheimer patients
... possibly. Or they could be tomorrow's cancer patients, or tomorrow's stroke patients, or tomorrow's jack-knifed tractor trailer across three lanes of traffic patients. All those can happen to people without diabetes, too, though; it's part of living.