The electric company isn't cutting their profits to do this. The cost is either rolled into the rate or provided by the tax payers.
Maybe this is a good investment for the electric company. For a $2400 investment they get to charge about $1000-2000 extra for electricity each year. Even removing there cost of generation they should have their money back in 2-4 years and then profit beyond that. Besides if you already have the charger your next vehicle is probably going to be electric as well.
No reason to automatically assume the cost is passed to the neighbors.