Why is the electricity price of charging piles for property applications high?

Ordinary household electricity price is a few cents, the most expensive place should not exceed one dollar, and household electricity is monophasic electricity. This kind of centralized charging pile is basically three-phase electricity, which is equivalent to the way of industrial electricity consumption. The price of three-phase electricity is naturally higher than that of single-phase electricity, which is why the price of industrial electricity is much more expensive than that of household electricity.