In theory, this is possible, if you do not take into account emotional, communicative and cognitive aspects of human communication, which are possible only in the real world. From a practical point of view the most effective way is a virtual exhibition in combination with a physical one. In this scenario, virtual exhibition performs the function of storing information and providing access to it without time constraints.
Another important advantage is the ability to attract attention from a wider audience. To attend virtual exhibition the participants do not need to fly or go somewhere. To visit virtual exhibition you just need to open your computer and fill out a questionnaire. Opportunity to communicate via chat and to have an introductory meeting right there at the booth makes access to the audience easier for the exhibitors. Three-dimensional space combined with interactive elements creates a more natural environment for visitors and increases the length of time they spend at the exhibition.