At least for the time being that is my take on it. I live in the midwest. There are plenty of Tesla superchargers near interstates routes, but not many of them are the latest fast charging stations. I live in Champaign, Illinois at the cross roads of I74 and I57. I've never seen more than 4 cars at the 8 stall Tesla supercharging station ever.
GM is making a big deal about transitioning to their EV line up. One of the most active Cadillac salesman has told us that many of his customers have told him they will switch brands before they buy an EV.