Governments will always play a huge part in solving big problems. They set public policy and are uniquely able to provide the resources to make sure solutions reach everyone who needs them. They also fund basic research, which is a crucial component of the innovation that improves life for everyone.
The Center for Disease Control started out as the malaria war control board based in Atlanta. Partly because the head of Coke had some people out to his plantation, and they got infected with malaria, and partly 'cause all the military recruits were coming down and having a higher fatality rate from malaria while training than in the field.