I wonder what if Sri lanka and certain gulf states

I wonder what if Sri lanka and certain gulf states with the amount of over 20% diabetic population today are just an early signal that the diabetes epidemy could grow much larger than the previously estimated 9-10% of the global population or 640m by 2040?
What if 20% is the norm, what if we get 1.5billion diabetics globally during the decades ahead? Many low and midincome countries will not be able to deals with the cost bomb that is threatening the health and social systems.