I am in absolutely no doubt that diabetes can be cured with stem cell treatment.
And if not stem cells, then through something exactly like this mechanical pancreas.
The main obstacle to curing everyone is money - not the money for the treatment, but the money the drug companies make from diabetes.
The insulin, needles, the meters, lances, strips, tablets, whatever else is used in type 1 and type 2 treatment - it's a goldmine, and it's getting richer every year as more people are diagnosed with both types.
There's no way they would give up this kind of profit.