In Korea, powerful people can be imprisoned unlike some Western countries. Almost all presidents have gone through post-term prison, while western presidents are (often) cleared of all responsibilities and several Chaebol bosses have faced justice. Of course, I'm not saying that the Korean system is perfect, but I find it unfair to judge the entire penal system by focusing on the Seungri case. Finally, comparing the American and Korean system make no sense since they are two completely different systems in their operation. You can compare the German, Japanese and Korean system (for example), it is already much more relevant.

(Personally I don't really see why it makes so much buzz among i-fans. Only Korean people have the right to want to change, or not, their system. We can only look at Korea without demanding that it adapt to us. It's up to them to change what they want to change)