What's up with DC and Hardcovers

More and more DC seems to be opting for Hardcover trades over Paperback. Why is that? The obvious reason I can come up with is that they can charge more for Hardcovers. Maybe lots of comic readers enjoy the longevity they provide, but I prefer less expensive paperback versions. My collection is already heavy enough!
I'm particularly upset with this over Alex Ross' Justice series. They are releasing 3 Hardcover trades with 4 issues each. I'm sure eventually they will release a collected trade paperback with all 12 issues, but I don't know when that will be. Anyone else share my frustrations, or do you prefer hardcovers?
I'm particularly upset with this over Alex Ross' Justice series. They are releasing 3 Hardcover trades with 4 issues each. I'm sure eventually they will release a collected trade paperback with all 12 issues, but I don't know when that will be. Anyone else share my frustrations, or do you prefer hardcovers?