Today with chemical laboratory analysis you can get the ingredients of anything. So what Coca Cola uses is not that secret. Your point one is not valid.

The secret is making this product economically in enormous quantities. It is about providers, contracts, supply warrantees, dealing with those that bottle your concentrates, water supplies to mix your concentrates, and so on.

There are people that study illnesses data at least in Europe and USA, and there is a clear relationship between sugary carbonated drinks in general and lots of illnesses.

There is a clear relationship with diabetes an sugary drinks in particular.

In the past Coca Cola used Coca, and hence cocaine, but it does not anymore.