But it's also because Hearthstone will never really be a proper eSport. 

EDIT: Keep them downvotes coming but it will never change the fact that Hearthstone pales in comparison compared to the skill ceiling of proper eSport games like StarCraft, CS:GO, LoL/Dota/HotS, fighting games etc. Hearthstone's a fun game to play but it's retarded as an eSport. :) 