The audience and market for the 3D scene i am going to make could vary greatly as it isnt made for a particular one, however looking at it from a different perspective i believe the use of composition in this way would be more useful in some places than others. Some possible audiences/markets that would benefit from using these methods could include:
Film and television industry: 3D modeling is widely used in the film and television industry to create special effects, backgrounds, and other visual elements for movies and TV shows. Although not static themselves like photographs they can still involve cg scenes of a static nature. In this case, the audience would be the viewers of the film or TV show.
Video game industry: 3D modeling is also commonly used in the video game industry to create characters, environments, and other assets for video games. Similar to the previous industry many games involve static scenes such as a starting screen. In this case, the audience would be the players of the video game.
Architecture and design: 3D modeling is often used in the architecture and design fields to create virtual models of buildings, interiors, and other spaces. From the designs of the buildings to how they are presented there are many places for composition to be used. In this case, the audience could be architects, designers, and their clients.
Advertising and marketing: 3D modeling can be used in advertising and marketing to create virtual product demonstrations, animations, and other visual materials. Although not as useful in the animations, other promotional material such as posters could include 3D elements arranged using the composition techniques. In this case, the audience could be potential customers or clients of the product or service being advertised.
Overall I believe there are many places where these methods would be useful.