Lights adding up to over brightness

In my village-building game, players can among other things place street lights. One player tried how far he could push it and ended up with this:

and I’m fairly sure that’s not how things would work, even if you placed a hundred oil lamps right next to each other.
I’m using the built-in render pipeline with linear color space and defered rendering. These are point lights with a brightness of around 1, no shadows. Should they really add up like that? Is there something I can do about it?

I mean adding more lights makes things brighter.

You could shorten the range of the lights and disallow placing too many near each other?

It’s not going to be physically accurate because unity’s default light falloff isn’t physically accurate.

Yeah, I get that it gets brighter. It just gets… super floodlight bright. From what’s essentially oil lamps.

I can’t reduce the range. I might have to fiddle with the settings if there is a high density of lights.