Yes, but Tesla's margins are much higher. This will probably drop if they ever manage to make a 90s Corolla equivalent and go downmarket, but it seems they still sell as much as they can make for the moment.
Could just be my brain being weird. Or could be the fact that there are Teslas freakin' everywhere in most of the (non-aggressively-red-to-the-point-of-drinking-gasoline) USA now.
Total profit matters more than margins, unless you have reason to believe the margins will hold true at any level.
Charging at a gen2 supercharger (not even gen3, which are available in the viscinity of where i live as well) goes at a rate between 300-510 miles of charge per hour (depending on the current battery charge) for me.
Charging at my apartment building garage is slow (given it only uses a regular 110v outlet, the same one you would use to charge your phone), but i just leave it overnight, so the speed doesn't matter much in that scenario.
The charger at work is somewhere in-between, but i can easily get about 70-100 miles of charge per hour.
And the costs make it very worth it for me. At the supercharger, my last fill up cost me $16 (i typically drive the car down to 15-20% charge, and then fill it up to 80-90%), and it went up to $20 about twice in my 3 years of ownership (when i was very close to empty). At the apt building and at work, it is free. Meanwhile, even pre-covid (aka before 2019, because that's when I switched cars), my Camry would routinely take about $40-50 to fill up (and I would try to get it filled once I have about 20% of the tank left).
As for superchargers being busy, I guess there might be some specific one that is busy at a specific time of the day? Because I have about 4 different supercharger locations within 7 miles of where I am, and that's not counting non-Tesla-branded chargers. For context, I am in Seattle area, and as I am looking out of my window overlooking Mercer St, at any given point in time, I can see at least 2-3 Teslas (not even counting other EVs), which tells me that a lot of people find EVs to be very viable in this area.
3 years ago, there was only 1 supercharger location within that same distance. Every other grocery store and a large public location where people park (like IKEA or a movie theater) has charging spots.
My musings aside, overall I agree with you. However, charging infrastructure these days is more viable already than what most people assume. Not everywhere yet, of course, but it is getting there.