Making movies at its roots is an art and also a business. Films tell stories that capture the imagination of viewers, but if they do not make money, it is hard for the storytellers to get the resources they need to make another film. Thus films earnings matter, and it is a race to be one of the highest-earning films. On the one hand, there will always be innovators who are able to make the most of little means. But on the other, big studios can finance many movies every year with their numerous assets. This business side of films is what allows the industry to keep up with the demand for new content.
Source:https://www.hollywoodinsider.com/highest-earning-films-cinema-box-office/