So what if they can't? People SHOULD unsub or not purchase something if--GASP!--they don't like the product they are purchasing. Wtf "can't deal with"...like a video game company is a whiny toddler that a parent has to tolerate.
Unsubbing or sitting out an xpac is no big deal, people do it all the time. The only one who is adversely affected by such decisions is Blizzard.