Only time will tell, the USA is not prepared and honestly it's impossible to say. EVs only make up 2% of the cars on the road. Many states currently have power issues.It was also said a while back that the grid could not handle the demand of every house in the South having AC.
Well guess what, it's pretty much ubiquitous now.
I'm not suggesting wishful thinking that it's just going to magically happen. But supply will come online in response to demand.
I never heard that about AC in the south ... but I can say this. Some state governments wanted gasoline sales banned in ten years. We all knew that wouldnt happen. The evolution to AC went on for 50 or more years.
Battery cars cannot be replaced by gasoline anytime in the next 100 years. A whole new power grid needs to be replaced in order to shut down the gasoline stations for 300 million cars.
Something else will come along is my feeling. But I do not think you or I will be alive when this debate is over.

(and I am not really debating you except to say current lithium battery cars are just a stepping stone and without government forcing it it will be never)