Why are the majority of Asian DVD releases either horror or violent films, do the companies not realise the potential market they're missing out on?

For example, there were 4 or 5 Korean DVDs released recently in the UK, they were:

H - a violent film about serial killings.
Acacia - A horror film, actually seems quite interesting but that's not my point.
The Quiet Family - Another film with a lot of violence in it albeit on a lighter note than H.
Real Fiction - I know it's Ki-duk Kim but still chock full of violence.
Doll Master - A very poorly rated horror film.

Where are the dramas, where are the classics, in fact where is anything that doesn't smack of making a quick buck?

The bubble will burst soon and then what? Companies are cutting their own throats and some of them (no names mentioned) should know a lot better.

Does anyone else have an opinion on this subject?

Cheers Trev