1 phase 16A is still not really good - only ~3.6 kW at best. But 230V still makes the cabling easier to handle and 3-phase power is common in residential buildings (at least in parts of Europe), so 11 kW (3x16A) or 22 kW (3x32A) are usual sizes for electric car chargers at homes.

Bigger restriction on that is how many people don't live in homes where they can just install a charger, but rather in apartments with either no charging or no dedicated parking at all.