One factor that I think has helped a lot is Kickstarter / crowdfunding, which helps mitigate the costs of a first production run.
Another factor is DRM in video games -- why spend 4x$60 on four licenses for a multiplayer video game and hundreds more on hardware, when you could just spend $50 on a board game and have it support four to six people?
Another factor is DRM in video games -- why spend 4x$60 on four licenses for a multiplayer video game and hundreds more on hardware, when you could just spend $50 on a board game and have it support four to six people?