Yes, if we charge for images then they will be hosted here. And triple backed up, etc.

It's usually very easy to display any image on the Internet on your site. It's just a matter of using the full URL instead of only something like cat.jpg. But it's a bit frowned on to use images from elsewhere, it's often called hotlinking. But with NFTs, I think it's fine because it seems like NFTs would not be possible without hotlinking.