it won't, because if they stack petfood (all the items which SHOULD BE stackable - in games like WOW these crap items are all stackable up to 200) etc. they will lose potential money. but as i said - they won't do it, because that's one part they are making money from - people buying premium bags. i don't like it. but sadly, that's how it is and it won't change. everyone who owns a cash cow trys every way to keep melking it and he won't stop until it doesn't give milk anymore. that's how humans are - even the best devs in the world become like this, as soon as it means money.