In the early days of YouTube vlogs (didn't have a name back then), and short films sketches were really all people made. It was a cool place that people could post their videos of whatever, and share them. As gaming itself started to become it's own form of generalized media, (from it's humble start as just a toy to play with). It clung to the old pastime of going to a friends house, and sharing an adventure through gaming with them. Now, you are able to do it without leaving your own home, or friends home, or even the office. Gaming won't "die down", but I do believe the others will rise again as more and more people realize they have to make the change.