Cost of Driving an EV

I'm comparing them as modes of transportation. Obviously different propulsion methods. Cars replaced horses. A day, year, decade, doesn't matter, they replaced horses for transportation.

We aren't replacing cars, just changing the way they are powered. Like trains, ic vehicles won't disappear, they will continue to operate until it's too expensive to operate (gasoline becomes too costly, parts availability, etc). It took twenty years or so before most steam engines met their demise, often working local routes and relegated to yard duty for the smaller engines. So I don't think it will be an overnight type of transition, but I think it will be hastened by those who stand to profit from the EV market.
Respectfully I maintain that the horse is the propulsion unit for the carriage. Put a carriage from that period next to a horseless carriage and the difference is the propulsion unit. I think we will have agree that we disagree on semantics. lol.
On the subject of hastening the transition for profit. i think that the inventors of the horseless carriage or auto industry also did try to hasten the transition from horse to ic. I'm sure they pulled all the levers at their disposal to profit from the transition. Also I believe those that profited from the horse industry did what they could at the time to slow the transition. Example, pass laws to prohibit horseless carriages from using roads because they were "dangerous". I'm not saying this was right or wrong. But in hindsite would we have been better off to delay the transition by some number of years?