The lower the durability of the earbuds, the higher Skullcandy's revenues are likely to be since it will drive replacement purchases. The exception would be if competitors develop more durable earbuds, which could drive a shift in market share from Skullcandy to the others. However, no company has focused on durability rather favoring earbuds that can pump out more bass.
Higher quality headphones by SKUL or competitors favor a short position, not the other way around.