The cost of running anything is as much part of the cost as the cost of buying it.
Why do you think old factories, machinery etc are often abandoned for newer more efficient less costly to run ones?
If you don’t have the large price tag up front, it matters little how much you “save”. Corporate expenditures are different because of depreciation, etc. Many buy new heavy machinery, many do not. The time value of money also has to be taken into consideration.
Auto operating expenses also vary greatly, and needs are different. In my case, I typically buy old cars and keep them in shape. My personal car right now is a 2004 Chevy Venture. It coat me $3,700 with 165,000 miles. I have had it for three years and 40,000 miles. I have put nearrly $5k into repairs, $5k in gasoline, and $500 in maintenance for $9,200. The only EV minivan I know of is the VW id.buzz. It is $50,000 new, unavailaable used. It would take me an awfully long time to make up the $35,000 difference. Tires cost more. Electricity is cheaper, but not zero.
In any event EVs cost more money upfront for the same car in the same class.