Yes they are.
Brochures provide people with information to make a well-informed purchasing decision. Brochures are important because people still need reference information to draw from.
Brochures don't go out of fashion, they just adapt and change according to the communication means of most people in society.
Business development is all about getting the word out. Connecting with people and creating awareness and understanding of an organisation's brand.
Brochures enable people working in business development to provide existing and future clientele with information in an informative, influential and attractive manner in the most appropriate and convenient medium - digitally or in paper format.