Insoluble fiber doesn't freeze well. I'll prove it to you. Take an orange, put it in the freezer overnight. Take it out the next morning, and let it thaw. Then try to eat it. It's not an orange anymore. It's turned to mush. The ice crystals have macerated the cell walls of the orange, so that upon thawing, the water rushes in, destroying the texture of the orange. Of course, Big Food knows this. So what do they do? They squeeze it and freeze it. Now it lasts forever and there's no depreciation. They've turned an orange into a commodity, that is, storable food.