As result, as you've said it is unpredictable so the house is always having a high chance of winning. There are gamblers that are lucky with this game but in most of the time, it's all about the house.
IIn dice games the chance that the House will win is usually not that high. Btcgosu.com has a nice overview of the most common casinos and their house edges: 
Source
As you can see, this already starts at 0.8%, which means that you have a 49.2% chance of winning a game and the house just 50.8%.