Part of it is space, part of it is keeping costs down and I think we are all grateful that it's flash storage instead of spinning HDDs. I completely agree that we need to start seeing larger options, but OEM's seem to be telling us that even when they put out the larger versions, most consumers still buy whatever the cheapest version is. A little over a year ago an article was released saying that we'd overcome the 64GB limitation on a single chip and iPads already had 128GB versions on those, so we know it's possible.. but are people going to pay a $100-300 premium for that, especially when we've been becoming more acclimated to an "all your data everywhere" cloud style for a few years now? Costs will go down when demand goes up and demand will go up as costs go down. We need a catalyst and it's competing against the essentially free cloud for price consideration - that's a rough place to start from.