Why do prices vary so much between companies?

Think of it like flying. You have budget airlines and full-service carriers. A cheap safari operator packs 7 people into a car, drives in a convoy of 50 cars, and dumps guests at a mega-camp serving basic rice and curry. A premium operator puts 4-6 people in a car, drives on a private route, and takes you to a boutique camp with fresh BBQ and tablecloths. You are paying for exclusivity, space, and food quality.