The game is still getting new features through official development and through addons. People who weren't interested in the pure survival or "3d drawing" modes

The game is still getting new features through official development and through addons. People who weren't interested in the pure survival or "3d drawing" modes might be more interested in the improvements in interactive storytelling, both creating them and running through maps by others. The game has also gained a significant community on YouTube (and probably elsewhere), which ends up promoting the game. I watch Minecraft videos occasionally -- some of the interactive storytelling is quite good --, despite the fact that I've never actually played the game. And it's just an impulse buy away if I ever see a video which makes me thing I need to play this myself.