I'm pretty much exclusively working in civil stuff for now, where I work, this would be massive overkill. They see stuff like that as something they are paying extra for. Most of the time on the rare occasions I do photo or video for real estate...
All drone pilots have their own chargers. I believe he was referring more to plenty of places with access to electric receptacles and enough space to set up their own chargers. Probably something similar to the small work areas airline business...
I'd think standard household current outlets would suffice. People will have chargers for their own equipment, or should. You don't need to provide chargers, just access to power.
Maybe separate the outlets on different circuits (to spread load...