Here in northern Montana, there are no super chargers anywhere except on interstates, and more than 75% of the state is more than 100 miles from an interstate. Same for the Dakotas, Wyoming, and Nebraska. 100 miles may be true weighted by population, but it is certainly not true by area between the Mississippi and the west coast.
It’s taken $600 million and 10 years for Tesla to mostly cover the developed world. Give it another year or two for the most rural areas to get coverage. Most of the country lives outside of Montana, the Dakotas, Wyoming, and Nebraska.
Remember, we’re talking the majority of people, not the long tail.