There is a texture pack (Earthy) sold on the marketplace that is 667MB in size. On trying to download this texture pack, I receive a message that it can't be downloaded because my device doesn't have enough space. My device has 91GB of free space, but I realize that Minecraft is unable to utilize all that space. However, if I delete all of the texture packs that I currently have, which in total is 1.2GB, I am still unable to download the texture pack in question. Indeed, even if try downloading it on a completely empty profile, i.e no worlds or marketplace content, it still fails with the same error. So, there's something wrong here, either with the way Minecraft calculates storage space or something. And there's an issue with the fact that you can buy something on the Marketplace and it be impossible for you to actually use it with no way to know before hand that that is going to be a possibility.