Answer
The laser beam does not spread out appreciably.
Work Step by Step
As explained on page 820, a laser beam is very narrow and intense, and the light is a nearly perfect plane wave. Its intensity stays almost constant as it travels away from the laser.
In contrast, the light from the street lamp is a spherically symmetric wave. It has an intensity that drops off as $1/r^2$ as it travels away from the streetlamp. Far away, the power from the lamp that reaches the camera is far less than 1000 W.
To cite an example, at a distance of 1 km, the streetlamp’s intensity would be less than $1000W/4\pi (1000m)^2=8\times10^{-5}W/m^2$, which would be less than half the intensity of the laser at that distance. Thus the laser would appear to be stronger when photographed.