Imagine a malicious person constantly aiming the light at at the house of someone they don’t like. Good thing it doesn’t seem to be feasible any time soon.
“I want a spot, but I want all of my sunlight focused onto a spot about a centimeter across. I’ll give you the coordinates.”
Because the sun is not a point source but a disk half a degree across, you can’t focus the sun tighter than about a 1km spot from a mirror in low earth orbit.
Okay but can we make that 1 km hot enough to burn everything inside of it?
For science of course.
So if they over concentrate does this turn into an ‘ant in a magnifying glass’ situation?
Surely not. Mirrors are incapable of destruction. Why that would be dangerous! You could burn crops or boil away water reserves. Surely no corporation would so irresponsible!