The important thing is not to allow the light to swing outside of the footprint of the legs.
... as we see every day! If it's really that important (?), then surely it cannot be beyond the wit of manufacturers to include ways of preventing it from happening. That is, incorporating stops!
But you're right, Cliff. Large lamps (effectively mobile operating lamps) generally have heavy (cast iron, even) bases. Even
Nurse Diesel has a tough time tipping those over!