The amount you spend on gas and electric highly depends on the car and where you drive. In Texas, gas is under $2 a gallon. You need to pay $0.20 per KWh or less to match it. But if you go on a long trip and charge on a Supercharger or Electrify America at $0.48 per KW, it would be equal to paying $5-6 per gallon if you had a good hybrid car. And you would not have to stop frequently to charge, wasting time and money. And be able to go where no EV can without planning ahead or sticking to the planned route. That is why I bought Rav4 Prime. I drive around town for free on electricity because I have solar and I have overproduction. But if I go on a long trip, I use Hybrid mode and save money and time that way.
The number of chargers makes no difference at all if you can reach one before you run out of juice. They can install one on every exit and all it means you will be passing many before you need one. But you still need to exit freeway, find a charger, charge for a long time and then get back on freeway. And you have to do it many more times than if you drive ICE with a range, lets say 500 miles. What matters is the range. If you have the range you don’t need many chargers. That is the right solution.