[fludlight]

The problem isn't a lack of technology, but cost. You have to get your electric utility to make substantial improvements to their delivery infrastructure. This generally involves digging up the street and laying cables, not just flicking a switch. It gets more expensive depending on how far your proposed charging station is from the nearest high voltage distribution point.

[Retric]

It does not take a lot of buildings to get into the 1MW range.

A 20 story apartment complex with say 400 apartments needs ~1MW. Power companies are used to rolling out these kinds of connections and large ones do it on a weekly if not daily basis.