As on board sound become better and much better with each coming years, most normal user will use on board rather than dedicated sound card. How many home user really need to add sd when they get then on board? Most of home user doesn't need the clarity of sound in their daily live. So, I think, in time sound card will lose the battle.

Why pay additional RM200-300 just to hear sound while you already have that with the on board?

Anyway, this is only for normal/average home user. I believe most Low Yat user, which is not an average user have sound card in their system including me.